ANNEX IIU.K.(Part-145)

145.1GeneralU.K.

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Textual Amendments

SECTION AU.K.TECHNICAL [F2AND ORGANISATIONAL] REQUIREMENTS

145.A.10ScopeU.K.

This Section establishes the requirements to be met by an organisation to qualify for the issue or continuation of an approval [F3certificate] for the maintenance of aircraft and components.

Textual Amendments

[F4145.A.15Application for an organisation certificateU.K.
(a)

An application for a certificate or an amendment to an existing certificate in accordance with this Annex must be made in a form and manner established by the CAA, taking into account the applicable requirements of Annex I (Part-M), Annex Vb (Part-ML) and this Annex.

(b)

Applicants for an initial certificate pursuant to this Annex must provide the CAA with:

1.

the results of a pre-audit performed by the organisation against the applicable requirements provided for in Annex I (Part-M), Annex Vb (Part-ML) and this Annex;

2.

documentation demonstrating how they intend to ensure compliance with the requirements of this Regulation.]

Textual Amendments

145.A.20Terms of ApprovalU.K.
(a)

[F5The organisation’s scope of work must be specified in the maintenance organisation exposition (“MOE”) in accordance with point 145.A.70;

(b)

The organisation must comply with the terms of approval attached to the organisation certificate issued by the CAA, and with the scope of work specified in the MOE.]

Textual Amendments

145.A.25Facility requirementsU.K.

The organisation shall ensure that:

(a)

Facilities are provided appropriate for all planned work, ensuring in particular, protection from the weather elements. Specialised workshops and bays are segregated as appropriate, to ensure that environmental and work area contamination is unlikely to occur.

1.

For base maintenance of aircraft, aircraft hangars are both available and large enough to accommodate aircraft on planned base maintenance;

2.

For component maintenance, component workshops are large enough to accommodate the components on planned maintenance.

(b)

Office accommodation is provided for the management of the planned work referred to in point (a), and certifying staff so that they can carry out their designated tasks in a manner that contributes to good aircraft maintenance standards.

(c)

The working environment including aircraft hangars, component workshops and office accommodation is appropriate for the task carried out and in particular special requirements observed. Unless otherwise dictated by the particular task environment, the working environment must be such that the effectiveness of personnel is not impaired:

1.

temperatures must be maintained such that personnel can carry out required tasks without undue discomfort.

2.

dust and any other airborne contamination are kept to a minimum and not be permitted to reach a level in the work task area where visible aircraft/component surface contamination is evident. Where dust/other airborne contamination results in visible surface contamination, all susceptible systems are sealed until acceptable conditions are re-established.

3.

lighting is such as to ensure each inspection and maintenance task can be carried out in an effective manner.

4.

noise shall not distract personnel from carrying out inspection tasks. Where it is impractical to control the noise source, such personnel are provided with the necessary personal equipment to stop excessive noise causing distraction during inspection tasks.

5.

where a particular maintenance task requires the application of specific environmental conditions different to the foregoing, then such conditions are observed. Specific conditions are identified in the maintenance data.

6.

the working environment for line maintenance is such that the particular maintenance or inspection task can be carried out without undue distraction. Therefore where the working environment deteriorates to an unacceptable level in respect of temperature, moisture, hail, ice, snow, wind, light, dust/other airborne contamination, the particular maintenance or inspection tasks must be suspended until satisfactory conditions are re-established.

(d)

Secure storage facilities are provided for components, equipment, tools and material. Storage conditions ensure segregation of serviceable components and material from unserviceable aircraft components, material, equipment and tools. The conditions of storage are in accordance with the manufacturer's instructions to prevent deterioration and damage of stored items. Access to storage facilities is restricted to authorised personnel.

145.A.30Personnel requirementsU.K.
(a)

[F6The organisation must appoint an accountable manager that has corporate authority to ensure that all maintenance activities of the organisation can be financed and carried out in accordance with Regulation (EU) 2018/1139. The accountable manager must:

1.

ensure that all necessary resources are available to accomplish maintenance in accordance with this Annex, Annex I (Part-M) and Annex Vb (Part-ML), as applicable, to support the organisation certificate;

2.

establish and promote the safety policy specified in point 145.A.200(a)(2);

3.

demonstrate a basic understanding of this Regulation.

(b)

The accountable manager—

1.

must nominate a person or group of persons representing the management structure for the maintenance functions and with the responsibility to ensure that the organisation works in accordance with the MOE and approved procedures. It must be made clear in the procedures who deputises for a particular person in the case of lengthy absence of that person;

2.

must nominate a person or group of persons with the responsibility to manage the compliance monitoring function as part of the management system;

3.

must nominate a person or group of persons with the responsibility to manage the development, administration and maintenance of effective safety management processes as part of the management system.

(c)

The person or group of persons nominated in accordance with points (b)(1), (2) and (3) must have a responsibility to the accountable manager and direct access to them to keep them properly informed on compliance and safety matters. Additionally, they must be able to demonstrate relevant knowledge, background and satisfactory experience related to aircraft or component maintenance and demonstrate a working knowledge of this Regulation.

(d)

The organisation must have a maintenance resource plan to ensure it has sufficient and appropriately qualified staff to plan, perform, supervise, inspect and monitor the organisation’s activities in accordance with the terms of the approval. In addition, the organisation must have a procedure to reassess the work intended to be carried out when the actual staff availability is reduced compared to the planned staffing level for a particular work shift or period.

(e)

The organisation must establish and control the competency of the personnel involved in any maintenance, airworthiness reviews, safety management and compliance monitoring in accordance with a procedure and to a standard agreed with the CAA. In addition to the necessary expertise related to the job function, the competency of the personnel must include an understanding of the application of safety management principles, including human factors and human performance issues, which is appropriate to their function and responsibilities in the organisation.]

(f)

[F7The organisation shall ensure that personnel who carry out or control a continued-airworthiness non-destructive test of aircraft structures or components, or both, are appropriately qualified for the particular non-destructive test in accordance with the European or equivalent standard recognised by the [F8CAA]. Personnel who carry out any other specialised task shall be appropriately qualified in accordance with officially recognised standards. By derogation from this point, personnel referred to in point (g), points (h)(1) and (h)(2), qualified in category B1, B3 or L in accordance with Annex III (Part-66), may carry out and/or control colour contrast dye penetrant tests.

(g)

Any organisation maintaining aircraft, except where stated otherwise in point (j), shall in the case of aircraft line maintenance, have appropriate aircraft-rated certifying staff qualified as category B1, B2, B2L, B3 and L, as appropriate, in accordance with Annex III (Part-66) and point 145.A.35.

In addition such organisations may also use appropriately task-trained certifying staff holding the privileges set out in points 66.A.20(a)(1) and 66.A.20(a)(3)(ii) and qualified in accordance with Annex III (Part-66) and point 145.A.35 to carry out minor scheduled line maintenance and simple defect rectification. The availability of such certifying staff shall not replace the need for category B1, B2, B2L, B3 and L certifying staff, as appropriate.

(h)

Any organisation maintaining aircraft, except where stated otherwise in point (j), shall:

1.

in the case of base maintenance of complex motor-powered aircraft, have appropriate aircraft-type-rated certifying staff, qualified as category C in accordance with Annex III (Part-66) and point 145.A.35. In addition, the organisation shall have sufficient aircraft-type-rated staff qualified as category B1 and B2, as appropriate, in accordance with Annex III (Part-66) and point 145.A.35 to support the category C certifying staff.

(i)

Category B1 and B2 support staff shall ensure that all relevant tasks or inspections have been carried out to the required standard before the category C certifying staff issues the certificate of release to service.

(ii)

The organisation shall maintain a register of any such category B1 and B2 support staff.

(iii)

The category C certifying staff shall ensure that compliance with point (i) has been met and that all work required by the customer has been accomplished during the particular base maintenance check or work package, and shall also assess the impact of any work not carried out, with a view to either requiring its accomplishment or agreeing with the operator to defer such work to another specified check or time limit.

2.

in the case of base maintenance of aircraft other than complex motor-powered aircraft, have one of the following:

(i)

appropriate aircraft-rated certifying staff, qualified as category B1, B2, B2L, B3 and L, as appropriate, in accordance with Annex III (Part-66) and point 145.A.35;

(ii)

appropriate aircraft-rated certifying staff, qualified in category C and assisted by support staff, as set out in point 145.A.35(a)(i).

(i)

Component certifying staff shall be qualified in accordance with Article 5(6) and point 145.A.35.]

(j)

By derogation to points (g) and (h), in relation to the obligation to comply with Annex III (Part-66), the organisation may use certifying staff [F9and support staff that are] qualified in accordance with the following provisions:

1.

[F10For base maintenance carried out at a location outside the United Kingdom, [F11certifying staff and] support staff may be qualified in accordance with the national aviation regulations of the State in which the organisation facility is located subject to the conditions specified in Appendix IV to this Annex.

2.

For line maintenance carried out at a line station located outside the United Kingdom, the certifying staff may be qualified, subject to the conditions specified in Appendix IV to this Annex, in accordance with the following alternative conditions:

(i)

national aviation regulations of the State in which the line station is located,

(ii)

national aviation regulation of the State in which the organisation’s principal place of business is located.

3.

For a repetitive pre-flight airworthiness directive which specifically states that the flight crew may carry out such airworthiness directive, the organisation may issue a limited certification authorisation to the pilot on the basis of the flight crew licence held. In that case, the organisation must ensure that the pilot has carried out sufficient practical training ensuring that the pilot can accomplish the airworthiness directive.

4.

If an aircraft is operated away from a supported location, the organisation may issue a limited certification authorisation to the pilot on the basis of the flight crew licence held, subject to being satisfied that the pilot has carried out sufficient practical training ensuring that the pilot can accomplish the specified tasks.]

5.

In the following unforeseen cases, where an aircraft is grounded at a location other than the main base where no appropriate certifying staff are available, the organisation contracted to provide maintenance support may issue a one-off certification authorisation:

(i)

to one of its employees holding equivalent type authorisations on aircraft of similar technology, construction and systems; or

(ii)

to any person with not less than five years maintenance experience and holding a valid ICAO aircraft maintenance licence rated for the aircraft type requiring certification provided there is no organisation appropriately approved under this Part at that location and the contracted organisation obtains and holds on file evidence of the experience and the licence of that person.

[F12All such cases as specified in this point must be reported to the [F13CAA] within seven days after issuing such certification authorisation.] The organisation issuing the one-off authorisation shall ensure that any such maintenance that could affect flight safety is re-checked by an appropriately approved organisation.

(k)

[F14[F15If the organisation performs airworthiness reviews and issues the corresponding airworthiness review certificate in accordance with point ML.A.903 of Annex Vb (Part-ML), it shall have airworthiness review staff qualified and authorised [F16in accordance with point 145.A.37]

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(l)

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Editorial Information

Textual Amendments

145.A.35Certifying staff and support staffU.K.
(a)

[F7In addition to the requirements of points 145.A.30(g) and (h), the organisation shall ensure that certifying staff and support staff have an adequate understanding of the relevant aircraft or components, or both, to be maintained and of the associated organisation procedures. In the case of certifying staff, this shall be accomplished before the issue or reissue of the certification authorisation.

1.

‘ Support staff ’ means those staff holding an aircraft maintenance licence under Annex III (Part-66) in category B1, B2, B2L, B3 and/or L with the appropriate aircraft ratings, working in a base maintenance environment while not necessarily holding certification privileges.

2.

‘ Relevant aircraft and/or components ’ , means those aircraft or components specified in the particular certification authorisation.

3.

‘ Certification authorisation ’ means the authorisation issued to certifying staff by the organisation and which specifies the fact that those staff may sign certificates of release to service within the limitations stated in such authorisation on behalf of the approved organisation.

(b)

Except for the cases listed in points 145.A.30(j) and 66.A.20(a)3(ii), the organisation may only issue a certification authorisation to certifying staff in relation to the basic categories or subcategories and, except for the category A licence, any type rating listed on the aircraft maintenance licence as required by Annex III (Part-66), subject to the licence remaining valid throughout the validity period of the authorisation and to the certifying staff remaining in compliance with Annex III (Part-66).]

(c)

The organisation shall ensure that all certifying staff and support staff are involved in at least 6 months of actual relevant aircraft or component maintenance experience in any consecutive 2-year period.

For the purpose of this point ‘involved in actual relevant aircraft or component maintenance’ means that the person has worked in an aircraft or component maintenance environment and has either exercised the privileges of the certification authorisation and/or has actually carried out maintenance on at least some of the aircraft type or aircraft group systems specified in the particular certification authorisation.

(d)

[F18The organisation must ensure that all certifying staff and support staff receive sufficient recurrent training in each 2 year period to ensure that they have up to date knowledge of relevant technologies, organisation procedures and safety management, including human factor issues.

(e)

The organisation must establish a programme for recurrent training for certifying staff and support staff, including a procedure to ensure compliance with the relevant provisions of this point and a procedure to ensure compliance with Annex III (Part-66).

(f)

With the exception of the unforeseen cases specified in point 145.A.30(j)(5), the organisation must assess all certifying staff for their competency, qualifications and capability to carry out their intended certifying duties in accordance with a procedure in the MOE prior to the issue or reissue of a certification authorisation under this Annex to such staff.]

(g)

When the conditions of points (a), (b), (d), (f) and, where applicable, point (c) have been fulfilled by the certifying staff, the organisation shall issue a certification authorisation that clearly specifies the scope and limits of such authorisation. Continued validity of the certification authorisation is dependent upon continued compliance with points (a), (b), (d), and where applicable, (c).

(h)

[F19The certification authorisation must be in a style that makes its scope clear to the certifying staff and any authorised person who may require to examine the authorisation. Where codes are used to define scope, the organisation must make a code translation readily available. “Authorised person” means an official of the CAA.

(i)

The person or group of persons nominated under point 145.A.30(b)(2) that are responsible for the compliance monitoring function must remain responsible for issuing certification authorisations to certifying staff, but may nominate other persons to effectively issue or revoke certification authorisations in accordance with a procedure in the MOE.

(j)

The organisation must provide certifying staff with a copy of their certification authorisation in either written or electronic format.

(k)

Certifying staff must produce their certification authorisation to any authorised person within 24 hours of the request.

(l)

The minimum age for certifying staff and support staff is 21 years.

(m)

The holder of a category A aircraft maintenance licence may only exercise certification privileges on a specific aircraft type following the satisfactory completion of the relevant category A aircraft task training carried out by an organisation appropriately approved in accordance with Annex II (Part-145) or Annex IV (Part-147). This training must include practical hands-on training and theoretical training as appropriate for each task authorised. Satisfactory completion of training must be demonstrated by an examination or by workplace assessment carried out by the organisation.

(n)

The holder of a category B2 aircraft maintenance licence may only exercise the certification privileges described in point 66.A.20(a)(3)(ii) of Annex III (Part-66) following the satisfactory completion of:

(i)

the relevant category A aircraft task training; and

(ii)

6 months of proven practical experience covering the scope of the authorisation to be issued.

(o)

The task training referred to in point (n)(i) must include practical hands-on training and theoretical training as appropriate for each task authorised. Satisfactory completion of training must be demonstrated by an examination or by workplace assessment. Task training and examination or assessment must be carried out by the maintenance organisation issuing the certifying staff authorisation. The practical experience must also be obtained within that maintenance organisation.]

Textual Amendments

145.A.36 Records of airworthiness review staff U.K.

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Textual Amendments

[F21145.A.37Airworthiness review staffU.K.
(a)

In order to be approved to carry out airworthiness reviews and to issue the corresponding airworthiness review certificates (ARC) for aircraft covered by Annex Vb (Part-ML), the organisation must have airworthiness review staff that comply with all of the following requirements:

1.

they have acquired experience in continuing airworthiness of at least 1 year for sailplanes and balloons and of at least 3 years for all other aircraft;

2.

they hold a certifying staff authorisation for the corresponding aircraft;

3.

they have acquired knowledge of Annex I (Part-M), Subpart C, or of Annex Vb (Part-ML), Subpart C;

4.

they have acquired knowledge of the procedures of the maintenance organisation relevant to the airworthiness review and issue of the airworthiness review certificate.

(b)

Before the organisation issues an airworthiness review authorisation to a candidate, that candidate must perform an airworthiness review under the supervision of the CAA or under the supervision of a person that is already authorised as airworthiness review staff by the organisation. If this airworthiness review under supervision is satisfactory, the CAA may formally accept that candidate to become airworthiness review staff.

(c)

The organisation must ensure that the airworthiness review staff can demonstrate appropriate recent continuing airworthiness experience.]

Textual Amendments

[F7145.A.40 Equipment and tools] U.K.
(a)

[F7The organisation shall have available and use the necessary equipment and tools to perform the approved scope of work.

(i)

Where the manufacturer specifies a particular tool or equipment, the organisation shall use that tool or equipment, unless the use of alternative tooling or equipment is agreed by the [F22CAA] via procedures specified in the exposition.

(ii)

Equipment and tools must be permanently available, except in the case of any tool or equipment that is so infrequently used that its permanent availability is not necessary. Such cases shall be detailed in an exposition procedure.

(iii)

An organisation approved for base maintenance shall have sufficient aircraft access equipment and inspection platforms/docking as required for the proper inspection of the aircraft.]

(b)

The organisation shall ensure that all tools, equipment and particularly test equipment, as appropriate, are controlled and calibrated according to an officially recognised standard at a frequency to ensure serviceability and accuracy. Records of such calibrations and traceability to the standard used shall be kept by the organisation.

Textual Amendments

[F7145.A.42 Components U.K.
(a)

Classification of components. All components shall be classified into the following categories:

(i)

Components which are in a satisfactory condition, released on [F23a CAA Form 1] or equivalent and marked in accordance with Subpart Q of the Annex I (Part 21) to Regulation (EU) No 748/2012, unless otherwise specified in [F24point 21.A.307 of] Annex I (Part 21) to Regulation (EU) No 748/2012 [F25, in point M.A.502 of Annex I (Part-M), in point ML.A.502 of Annex III (Part-ML), or in this Annex (Part-145)].

(ii)

Unserviceable components which shall be maintained in accordance with this Regulation.

(iii)

[F26[X2Components categorised as unsalvageable because they have reached their mandatory life limitation or contain a non-repairable defect.]]

(iv)

Standard parts used on an aircraft, engine, propeller or other aircraft component when specified in the maintenance data and accompanied by evidence of conformity traceable to the applicable standard.

(v)

Material, both raw and consumable, used in the course of maintenance when the organisation is satisfied that the material meets the required specification and has appropriate traceability. All material shall be accompanied by documentation clearly relating to the particular material and containing a conformity to specification statement as well as the manufacturing and supplier source.

(b)

Components, standard parts and materials for installation

(i)

The organisation shall establish procedures for the acceptance of components, standard parts and materials for installation to ensure that components, standard parts and materials are in satisfactory condition and meet the applicable requirements of point (a).

(ii)

The organisation shall establish procedures to ensure that components, standard parts and materials shall only be installed on an aircraft or a component when they are in satisfactory condition, meet the applicable requirements of point (a) and the applicable maintenance data specifies the particular component, standard part or material.

(iii)

The organisation may fabricate a restricted range of parts to be used in the course of undergoing work within its own facilities, provided procedures are identified in the exposition.

(iv)

Components referred to in [F27point 21.A.307(b)(2)] of the Annex I (Part 21) to Regulation (EU) No 748/2012 shall only be installed if considered eligible for installation by the aircraft owner on its own aircraft.

(c)

Segregation of components

(i)

Unserviceable and unsalvageable components shall be segregated from serviceable components, standards parts and materials.

(ii)

[F26[X2Unsalvageable components shall not be permitted to re-enter the component supply system, unless mandatory life limitation have been extended or a repair solution has been approved in accordance with Regulation (EU) No 748/2012.]]]

Editorial Information

Textual Amendments

F27Words in Annex 2 point 145.A.42(b)(iv) substituted (1.7.2024) by The Aviation Safety (Amendment) Regulations 2023 (S.I. 2023/588), regs. 1(3), 22(10)(b)

145.A.45Maintenance dataU.K.
(a)

[F28The organisation must hold and use applicable current maintenance data which is necessary in the performance of maintenance, including modifications and repairs. “Applicable” means relevant to any aircraft, component or process specified in the organisation’s terms of approval and in any associated capability list. In the case of maintenance data provided by the person or organisation requesting the maintenance, the organisation must hold such data when the work is in progress, with the exception of the need to comply with point [F29145.A.55(c)].

(b)

Applicable maintenance data is the data specified in point M.A.401(b) of Annex I (Part-M) or in point ML.A.401(b) of Annex Vb (Part-ML), as applicable.

(c)

The organisation must establish procedures to ensure that if inaccurate, incomplete or ambiguous procedure, practice, information or maintenance instruction is found in the maintenance data used by maintenance personnel, it is recorded as part of the internal safety reporting scheme referred to in point 145.A.202 and notified to the author of the maintenance data.

(d)

The organisation may only modify maintenance instructions in accordance with a procedure that is specified in the MOE. With respect to changes to maintenance instructions, the organisation must demonstrate that they result in equivalent or improved maintenance standards, and must inform the author of the maintenance instructions of such changes. For the purposes of this point, “maintenance instructions” means instructions on how to carry out a particular maintenance task; they exclude the engineering design of repairs and modifications.

(e)

The organisation must provide a common work card or worksheet system to be used throughout the relevant parts of the organisation. In addition, the organisation must either accurately transcribe the maintenance data referred to in points (b) and (d) onto such work cards or worksheets, or make precise reference to the particular maintenance task or tasks contained in that maintenance data. Work cards and worksheets may be computer generated and held in an electronic database that is adequately protected against unauthorised alteration, and for which there is a backup electronic database which must be updated within 24 hours after an entry is made to the main electronic database. Complex or long maintenance tasks must be transcribed onto the work cards or worksheets and subdivided into clear stages to ensure that there is a record of the accomplishment of the complete maintenance task. When the organisation provides maintenance services to an aircraft operator which requires its own work card or worksheet system to be used, then such work card or worksheet system may be used. In that case, the organisation must establish a procedure to ensure that those work cards or worksheets are correctly completely.]

(f)

The organisation shall ensure that all applicable maintenance data is readily available for use when required by maintenance personnel.

(g)

The organisation shall establish a procedure to ensure that maintenance data it controls is kept up to date. In the case of operator/customer controlled and provided maintenance data, the organisation shall be able to show that either it has written confirmation from the operator/customer that all such maintenance data is up to date or it has work orders specifying the amendment status of the maintenance data to be used or it can show that it is on the operator/customer maintenance data amendment list.

Textual Amendments

145.A.47Production planningU.K.
(a)

The organisation shall have a system appropriate to the amount and complexity of work to plan the availability of all necessary personnel, tools, equipment, material, maintenance data and facilities in order to ensure the safe completion of the maintenance work.

(b)

[F30As part of the management system described in 145.A.200, the planning and organisation of maintenance tasks must take into account human performance limitations, including the threat of fatigue for maintenance personnel during shifts.]

(c)

When it is required to hand over the continuation or completion of maintenance tasks for reasons of a shift or personnel changeover, relevant information shall be adequately communicated between outgoing and incoming personnel.

(d)

[F31The organisation must ensure that aviation safety hazards associated with external working teams carrying out maintenance at the organisation’s facilities are considered by the organisation’s management system.]

Textual Amendments

[F32145.A.48 Performance of maintenance U.K.
(a)

[F33The organisation may only carry out maintenance on an aircraft or component for which it is approved when all the necessary facilities, equipment, tooling, material, maintenance data and personnel are available.

(b)

The organisation must be responsible for the maintenance that is performed within the scope of its approval.

(c)

The organisation must ensure that:

1.

after the completion of the maintenance, a general verification is carried out to ensure that the aircraft or component is clear of all tools, equipment and any extraneous parts or material, and that all access panels that were removed have been refitted;

2.

an error capturing method is implemented after the performance of any critical maintenance task;

3.

the risk of errors during maintenance and the risk of errors being repeated in identical maintenance tasks are minimised;

4.

damage is assessed, and modifications and repairs are carried out using the data specified in point M.A.304 of Annex I (Part-M) or point ML.A.304 of Annex Vb (Part-ML), as applicable;

5.

the assessment of aircraft defects is carried out in accordance with point M.A.403(b) of Annex I (Part-M) or point ML.A.403(b) of Annex Vb (Part-ML), as applicable.]]

Textual Amendments

Textual Amendments

145.A.50Certification of maintenanceU.K.
(a)

A certificate of release to service shall be issued by appropriately authorised certifying staff on behalf of the organisation when it has been verified that all maintenance ordered has been properly carried out by the organisation in accordance with the procedures specified in point 145.A.70, taking into account the availability and use of the maintenance data specified in point 145.A.45 and that there are no non-compliances which are known to endanger flight safety.

(b)

A certificate of release to service shall be issued before flight at the completion of any maintenance.

(c)

New defects or incomplete maintenance work orders identified during the above maintenance shall be brought to the attention of the aircraft operator for the specific purpose of obtaining agreement to rectify such defects or completing the missing elements of the maintenance work order. In the case where the aircraft operator declines to have such maintenance carried out under this point, point (e) is applicable.

(d)

[F26[X2A certificate of release to service shall be issued after the required maintenance on a component whilst off the aircraft has been carried out. [F15The authorised release certificate ‘[F34CAA Form 1]’ referred to in Appendix II of Annex I (Part M) constitutes the component certificate of release to service except if otherwise specified in point M.A.502 of Annex I (Part-M) or ML.A.502 of Annex Vb (Part-ML), as applicable.] When an organisation maintains a component for its own use, [F35a CAA Form 1] may not be necessary depending upon the organisation's internal release procedures defined in the exposition.]]

(e)

By derogation to point (a), when the organisation is unable to complete all maintenance ordered, it may issue a certificate of release to service within the approved aircraft limitations. The organisation shall enter such fact in the aircraft certificate of release to service before the issue of such certificate.

(f)

By derogation to points (a) and 145.A.42, when an aircraft is grounded at a location other than the main line station or main maintenance base due to the non-availability of a component with the appropriate release certificate, it is permissible to temporarily fit a component without the appropriate release certificate for a maximum of 30 flight hours or until the aircraft first returns to the main line station or main maintenance base, whichever is the sooner, subject to the aircraft operator agreement and said component having a suitable release certificate but otherwise in compliance with all applicable maintenance and operational requirements. Such components shall be removed by the above prescribed time limit unless an appropriate release certificate has been obtained in the meantime under points (a) and 145.A.42.

Textual Amendments

[F12145.A.55 Maintenance and airworthiness review records] U.K.
(a)

[F15The organisation shall record all details of maintenance work carried out. As a minimum, the organisation shall retain records necessary to prove that all requirements have been met for the issue of the certificate of release to service, including subcontractor's release documents, and for the issue of any airworthiness review certificate.

(b)

The organisation shall provide a copy of each certificate of release to service to the aircraft owner or operator, together with a copy of any detailed maintenance record associated with the work carried out and necessary to demonstrate compliance with point M.A.305 of Annex I (Part-M) or ML.A.305 of Annex Vb (Part-ML), as applicable.]

(c)

[F26[X2[F15The organisation shall retain a copy of all detailed maintenance records and any associated maintenance data for three years from the date on which the aircraft or component to which the work relates was issued with a certificate of release to service. In addition, it shall retain a copy of all the records related to the issue of airworthiness review certificates for three years from the date of issue and shall provide a copy of them to the owner of the aircraft.]

1.

The records under this point shall be stored in a manner that ensures protection from damage, alteration and theft.

2.

All computer hardware used to ensure backup shall be stored in a different location from that containing the working data in an environment that ensures they remain in good condition.

3.

When an organisation approved under this Annex terminates its operations, all retained maintenance records from the period of three years preceding the termination of operations of the organisation shall be distributed to the last owner or customer of respective aircraft or component or shall be stored in a way specified by the [F36CAA].]]

Textual Amendments

145.A.60Occurrence reportingU.K.
(a)

The organisation shall report to the [F37CAA], the state of registry and the organisation responsible for the design of the aircraft or component any condition of the aircraft or component identified by the organisation that has resulted or may result in an unsafe condition that hazards seriously the flight safety.

(b)

The organisation shall establish an internal occurrence reporting system as detailed in the exposition to enable the collection and evaluation of such reports, including the assessment and extraction of those occurrences to be reported under point (a). This procedure shall identify adverse trends, corrective actions taken or to be taken by the organisation to address deficiencies and include evaluation of all known relevant information relating to such occurrences and a method to circulate the information as necessary.

(c)

The organisation shall make such reports in a form and manner established by the Agency and ensure that they contain all pertinent information about the condition and evaluation results known to the organisation.

(d)

Where the organisation is contracted by a commercial operator to carry out maintenance, the organisation shall also report to the operator any such condition affecting the operator's aircraft or component.

(e)

The organisation shall produce and submit such reports as soon as practicable but in any case within 72 hours of the organisation identifying the condition to which the report relates.

Textual Amendments

[F38145.A.61Management system – additional occurrence reporting U.K.
(a)

As part of its management system referred to in point 145.A.200, the internal occurrence reporting system must include voluntary reporting. A single system may be established to meet the requirements of Regulation (EU) No 376/2014 and Regulation (EU) 2018/1139.

(b)

The organisation must report any event that affects an aircraft to the person or organisation that is responsible for the continuing airworthiness of that aircraft in accordance with point M.A.201 of Annex I (Part-M) or point ML.A.201 of Annex Vb (Part-ML), as applicable. For events that affect aircraft components, the organisation must report to the person or organisation that requested the maintenance.

(c)

For organisations that do not have their principal place of business in the United Kingdom, the initial mandatory reports must:

1.

appropriately safeguard the confidentiality of the identity of the reporter and of the persons mentioned in the report;

2.

be made as soon as practicable, but in any case within 72 hours after the organisation has become aware of the occurrence unless exceptional circumstances prevent this;

3.

be made in a form and manner established by the CAA; and

4.

contain all pertinent information about the event known to the organisation.

(d)

Where relevant, organisations referred to in point (c) must make a follow-up report that provides details of the actions the organisation intends to take to prevent similar occurrences in the future as soon as those actions have been identified. Those follow-up reports must:

1.

be sent to the entities referred to in point (b) to which the initial report was sent; and

2.

be made in a form and manner established by the CAA.]

Textual Amendments

145.A.65[F39Maintenance proceduresU.K.
(a)

The organisation must establish procedures which ensure that human factors and good maintenance practices are taken into account during maintenance, including subcontracted activities, and which comply with the applicable requirements of this Annex, Annex I (Part-M) and Annex Vb (Part-ML). Such procedures must be agreed with the CAA.

(b)

The maintenance procedures established under this point must:

1.

ensure that a clear maintenance work order or contract has been agreed between the organisation and the person or organisation that requests the maintenance, to clearly establish the maintenance to be carried out so that the aircraft and components may be released to service in accordance with point 145.A.50;

2.

cover all the aspects of carrying out the maintenance, including the provision and control of specialised services, and lay down the standards according to which the organisation intends to work.]

Textual Amendments

145.A.70[F40Maintenance Organisation ExpositionU.K.
(a)

The organisation must establish and maintain a maintenance organisation exposition (“MOE”) that includes, directly or by reference, all of the following:

1.

a statement signed by the accountable manager confirming that the maintenance organisation will at all times work in accordance with this Annex, Annex I (Part-M) and Annex Vb (Part-ML), as applicable, and with the approved MOE. If the accountable manager is not the chief executive officer of the organisation, then the chief executive officer must countersign the statement;

2.

the organisation’s safety policy and the related safety objectives referred to in point 145.A.200(a)(2);

3.

the title and name of any person nominated under points 145.A.30(b)(1), (2) and (3);

4.

the duties and responsibilities of any person nominated under points 145.A.30(b)(1), (2) and (3), including the matters on which they may deal directly with the CAA on behalf of the organisation;

5.

an organisation chart showing the accountability and associated lines of responsibility, established in accordance with point 145.A.200(a)(1), between all the persons referred to in points 145.A.30(a) and (b)(1), (2) and (3);

6.

a list of the certifying staff and, if applicable, support staff and airworthiness review staff with their scope of authorisation;

7.

a general description of the workforce resources and of the system that is in place to plan the availability of staff, as required by point 145.A.30(d);

8.

a general description of the facilities at each approved location;

9.

a specification of the scope of work of the organisation that is relevant to the terms of approval as required by point 145.A.20;

10.

the procedure that sets out the scope of changes not requiring prior approval and that describes how such changes will be managed and notified to the CAA F41...;

11.

the procedure for amending the MOE;

12.

the procedures specifying how the organisation ensures compliance with this Annex;

13.

a list of the commercial operators to which the organisation provides regular aircraft maintenance services, and the associated procedures;

14.

where applicable, a list of the subcontracted organisations referred to in point 145.A.75(b);

15.

a list of the approved locations including, where applicable, line maintenance locations referred to in point 145.A.75(d);

16.

a list of the contracted organisations;

17.

a list of the currently approved alternative means of compliance used by the organisation.

(b)

The initial issue of the MOE must be approved by the CAA. It must be amended as necessary so that it remains an up-to-date description of the organisation.

(c)

Amendments to the MOE must be managed as set out in the procedures referred to in points (a)(10) and (a)(11). Any amendments that are not included in the scope of the procedure referred to in point (a)(10), as well as any amendments related to the changes listed in point [F42145.A.85], must be approved by the CAA.]

Textual Amendments

F41Words in Annex 2 point 145.A.70(a)(10) omitted (6.12.2024) by virtue of The Aviation Safety (Amendment) Regulations 2024 (S.I. 2024/1290), regs. 1(2), 27(2)(c)(i)

Textual Amendments

145.A.75Privileges of the organisationU.K.

In accordance with the [F43MOE], the organisation shall be entitled to carry out the following tasks:

Textual Amendments

(a)

[F44Maintain any aircraft or component for which it is approved at the locations identified in the certificate and in the MOE;

(b)

Arrange for the maintenance of any aircraft or component for which it is approved at another subcontracted organisation that works under the management system of the organisation. This is limited to the work permitted under the procedures established in accordance with point 145.A.65 and it must not include a base maintenance check of an aircraft, or a complete workshop maintenance check or overhaul of an engine or an engine module;]

(c)

Maintain any aircraft or any component for which it is approved at any location subject to the need for such maintenance arising either from the unserviceability of the aircraft or from the necessity of supporting occasional line maintenance, subject to the conditions specified in the exposition;

(d)

Maintain any aircraft and/or component for which it is approved at a location identified as a line maintenance location capable of supporting minor maintenance and only if the organisation exposition both permits such activity and lists such locations;

(e)

Issue certificates of release to service in respect of completion of maintenance in accordance with point 145.A.50[F12;]

(f)

[F45If specifically approved to do so for aircraft covered by Annex Vb (Part-ML) and if it has its principal place of business in the United Kingdom, the organisation may perform airworthiness reviews and issue the corresponding airworthiness review certificates under the conditions specified in point ML.A.903 of Annex Vb (Part-ML).]

(g)

X1...

Textual Amendments

145.A.80Limitations on the organisationU.K.

F46...

Textual Amendments

145.A.85Changes to the organisationU.K.

The organisation shall notify the [F47CAA] of any proposal to carry out any of the following changes before such changes take place to enable the [F47CAA] to determine continued compliance with this Part and to amend, if necessary, the approval certificate, except that in the case of proposed changes in personnel not known to the management beforehand, these changes must be notified at the earliest opportunity:

Textual Amendments

1.

the name of the organisation;

2.

the main location of the organisation;

3.

additional locations of the organisation;

4.

the accountable manager;

5.

any of the persons nominated under point 145.A.30(b);

6.

[F12the facilities, equipment, tools, material, procedures, work scope, certifying staff and airworthiness review staff that could affect the approval.]

145.A.90[F48Continued validityU.K.
(a)

The organisation’s certificate must remain valid, subject to compliance with all of the following conditions:

1.

the CAA being granted access to the organisation as specified in point 145.A.140;

2.

the CAA being granted access to the organisation as specified in point 145.A.140;

3.

the certificate not being surrendered by the organisation, or suspended or revoked by the CAA under point 145.B.355.

(b)

Upon surrender or revocation, the certificate must be returned to the CAA without delay.]

Textual Amendments

145.A.95[F49Findings and observationsU.K.
(a)

After the receipt of a notification of findings in accordance with point 145.B.350, the organisation must:

1.

identify the root cause of, and any contributing factors to, the non-compliance;

2.

define a corrective action plan;

3.

demonstrate the implementation of corrective action to the satisfaction of the CAA.

(b)

The actions referred to in point (a) must be performed within the period agreed with the CAA in accordance with point 145.B.350.

(c)

The observations received in accordance with point 145.B.350(e) must be given due consideration by the organisation. The organisation must record the decisions taken in respect of those observations.]

Textual Amendments

[F50145.A.120Means of complianceU.K.
(a)

An organisation may use any alternative means of compliance to establish compliance with this Regulation.

(b)

If an organisation wishes to use an alternative means of compliance, it must, prior to using it, provide the CAA with a full description. The description must include any revisions to manuals or procedures that may be relevant, as well as an explanation indicating how compliance with this Regulation is achieved. The organisation may use those alternative means of compliance subject to prior approval from the CAA.]

Textual Amendments

[F50145.A.140AccessU.K.

For the purpose of determining compliance with the relevant requirements of Regulation (EU) 2018/1139, the organisation must ensure that access to any facility, aircraft, document, records, data, procedures or to any other material relevant to its activity subject to certification, whether it is subcontracted or not, is granted to any person authorised by the CAA.]

[F50145.A.155Immediate reaction to a safety problemU.K.

The organisation must implement:

(a)

any safety measures mandated by the CAA in accordance with point 145.B.135;

(b)

any relevant mandatory safety information issued by the CAA.]

[F50145.A.200Management systemU.K.
(a)

The organisation must establish, implement and maintain a management system that includes:

1.

clearly defined accountability and lines of responsibility throughout the organisation, including a direct safety accountability of the accountable manager;

2.

a description of the overall philosophies and principles of the organisation with regard to safety (“the safety policy”), and the related safety objectives;

3.

the identification of aviation safety hazards entailed by the activities of the organisation, their evaluation and the management of the associated risks, including taking actions to mitigate the risks and verify their effectiveness;

4.

maintaining personnel trained and competent to perform their tasks;

5.

documentation of all management system key processes, including a process for making personnel aware of their responsibilities and the procedure for amending that documentation;

6.

a function to monitor the compliance of the organisation with the relevant requirements. Compliance monitoring must include a system for feedback of findings to the accountable manager to ensure the effective implementation of corrective actions as necessary.

(b)

The management system must correspond to the size of the organisation and the nature and complexity of its activities, taking into account the hazards and the associated risks inherent in those activities.

(c)

If the organisation holds one or more additional organisation certificates within the scope of Regulation (EU) 2018/1139, the management system may be integrated with that required under the additional certificates held.]

[F50145.A.202Internal safety reporting schemeU.K.
(a)

As part of its management system, the organisation must establish an internal safety reporting scheme to enable the collection and evaluation of occurrences that are required to be reported under [F51points 145.A.60 and 145.A.61].

(b)

The scheme must also enable the collection and evaluation of those errors, near misses and hazards reported internally that do not fall under point (a).

(c)

Through that scheme, the organisation must:

1.

identify the causes of, and contributing factors to, the errors, near misses and hazards reported, and address them as part of its safety risk management process in accordance with point 145.A.200(a)(3);

2.

ensure an evaluation of all known, relevant information relating to errors, near misses, hazards and the inability to follow procedures, and a method to circulate the information as necessary.

(d)

The organisation must make arrangements to ensure the collection of safety issues related to subcontracted activities.]

Textual Amendments

[F50145.A.205Contracting and subcontractingU.K.
(a)

The organisation must ensure that when contracting or subcontracting any part of its maintenance activities:

1.

the maintenance conforms to the applicable requirements;

2.

any aviation safety hazard associated with such contracting or subcontracting is considered as part of the organisation’s management system.

(b)

If the organisation subcontracts any part of its maintenance activities to another organisation, the subcontracted organisation must work under the scope of approval of the subcontracting organisation.]

Textual Amendments

[F52SECTION BU.K.CAA REQUIREMENTS

145.B.005ScopeU.K.

This section establishes the conditions for conducting the certification, oversight and enforcement tasks as well as the administrative and management system requirements to be followed by the CAA.

145.B.115Oversight documentationU.K.

The CAA must provide all the standards, rules, technical publications, and related documents to the relevant personnel in order to allow them to perform their tasks and to discharge their responsibilities.

145.B.120Means of complianceU.K.
(a)

The CAA must develop an acceptable means of compliance that may be used to establish compliance with Regulation (EU) 2018/1139.

(b)

Alternative means of compliance may be used by an organisation to establish compliance with this Regulation when approved by the CAA.

145.B.135Immediate reaction to a safety problemU.K.
(a)

Without prejudice to Regulation (EU) No 376/2014, the CAA must implement a system to appropriately collect, analyse and disseminate safety information.

(b)

Upon receiving the information referred to in point (a), the CAA must take adequate measures to address the safety problem.

(c)

The CAA must immediately notify measures taken under point (b) to all organisations which need to comply with them under Regulation (EU) 2018/1139.

145.B.200Management systemU.K.
(a).

The CAA must establish and maintain a management system, including as a minimum:

1.

policies and procedures set out in writing and kept on record to describe its organisation and the means and methods for establishing compliance with Regulation (EU) 2018/1139. The procedures must be kept up to date, and serve as the basic working documents within the CAA for all its related tasks;

2.

a sufficient number of personnel to perform its tasks and discharge its responsibilities. A system must be in place to plan the availability of personnel in order to ensure the proper completion of all tasks;

3.

personnel that are qualified to perform their allocated tasks and that have the necessary knowledge and experience and receive initial and recurrent training to ensure continuing competency;

4.

adequate facilities and office accommodation for personnel to perform their allocated tasks;

5.

a function to monitor the compliance of the management system with the relevant requirements, and the adequacy of the procedures, including the establishment of an internal audit process and a safety risk management process. Compliance monitoring must include a system for feedback of audit findings to the senior management of the CAA to ensure the implementation of corrective actions as necessary;

6.

a person or group of persons having a responsibility to the senior management of the CAA for the compliance monitoring function.

(b).

The CAA must, for each field of activity, including the management system, appoint one or more persons with the overall responsibility for the management of the relevant tasks.

145.B.205Allocation of tasks to qualified entitiesU.K.
(a)

The CAA may allocate tasks, related to the initial certification or to the continuing oversight of organisations subject to Regulation (EU) 2018/1139 to qualified entities. When allocating tasks, the CAA must ensure that it has:

1.

put a system in place to initially and continuously assess whether the qualified entity complies with Annex VI to Regulation (EU) 2018/1139;

2.

established a written agreement with the qualified entity, approved by both parties at the appropriate management level, which stipulates:

(i)

the tasks to be performed;

(ii)

the declarations, reports and records to be provided;

(iii)

the technical conditions to be met when performing such tasks;

(iv)

the related liability coverage;

(v)

the protection given to the information acquired when carrying out such tasks.

(b)

The CAA must ensure that the internal audit process and safety risk management process established pursuant to point 145.B.200(a)(5) cover all the certification and continuing oversight tasks performed by the qualified entity on its behalf.

145.B.210Changes in the management systemU.K.
(a)

The CAA must have a system in place to identify the changes that affect its capability to perform its tasks and discharge its responsibilities as defined in Regulation (EU) 2018/1139. That system must enable the CAA to take action necessary to ensure that its management system remains adequate and effective.

(b)

The CAA must update its management system in a timely manner to reflect any changes to Regulation (EU) 2018/1139 to ensure its effective implementation.

145.B.220Record keepingU.K.
(a)

The CAA must establish a record-keeping system that allows the adequate storage, accessibility and reliable traceability of:

1.

the management system’s documented policies and procedures;

2.

the training, qualifications and authorisations of its personnel;

3.

the allocation of tasks, covering the elements required by point 145.B.205, as well as the details of tasks allocated;

4.

certification processes and continuing oversight of certified organisations, including:

(i)

the application for an organisation certificate;

(ii)

the CAA’s continuing oversight programme, including all the assessments, audits and inspection records;

(iii)

the organisation certificate, including any changes to it;

(iv)

a copy of the oversight programme, listing the dates when audits are due and when audits were carried out;

(v)

copies of all formal correspondence;

(vi)

recommendations for the issue or continuation of a certificate, details of findings and actions taken by the organisations to close those findings, including the date of closure, enforcement actions and observations;

(vii)

any assessment, audit and inspection report issued by a competent authority of a third country;

(viii)

copies of all the organisation MOEs or manuals, and of any amendments to them;

(ix)

copies of any other documents approved by the CAA;

5.

documents supporting the use of alternative means of compliance;

6.

safety information provided in accordance with point 145.B.125 and follow-up measures;

7.

the use of safeguard and flexibility provisions in accordance with Articles 70, 71(1) and 76(4) of Regulation (EU) 2018/1139.

(b)

The CAA must maintain a list of all the organisation certificates it has issued.

(c)

All the records referred to in points (a) and (b) must be kept for a minimum period of 5 years, subject to data protection law.

145.B.300Oversight principlesU.K.
(a)

The CAA must verify:

1.

compliance with the requirements that are applicable to organisations, prior to issuing an organisation certificate;

2.

continued compliance with the applicable requirements of the organisations it has certified;

3.

the implementation of appropriate safety measures mandated by the CAA in accordance with point 145.B.135(c).

(b)

This verification must:

1.

be supported by documentation specifically intended to provide personnel responsible for oversight with guidance to perform their functions;

2.

provide the organisations concerned with the results of oversight activities;

3.

be based on assessments, audits and inspections and, if needed, unannounced inspections;

4.

provide the CAA with the evidence needed in case further action is required, including the measures provided for in point 145.B.350.

(c)

The CAA must establish the scope of the oversight set out in points (a) and (b) taking into account the results of past oversight activities and the safety priorities.

(d)

The CAA must collect and process any information deemed necessary for performing oversight activities.

145.B.305Oversight programmeU.K.
(a)

The CAA must establish and maintain an oversight programme covering the oversight activities required by point 145.B.300.

(b)

The oversight programme must take into account the specific nature of the organisation, the complexity of its activities, and the results of past certification and oversight activities, and it must be based on the assessment of the associated risks. It must include, within each oversight planning cycle:

1.

assessments, audits and inspections, including, as appropriate:

(i)

management system assessments and process audits;

(ii)

product audits of a relevant sample of the maintenance carried out by the organisation;

(iii)

sampling of the airworthiness reviews performed;

(iv)

unannounced inspections;

2.

meetings convened between the accountable manager and the CAA to ensure that both parties remain informed of all significant issues.

(c)

The oversight planning cycle must not exceed 24 months.

(d)

Notwithstanding point (c), the oversight planning cycle may be extended to 36 months if the CAA has established that during the previous 24 months:

1.

the organisation has demonstrated that it can effectively identify aviation safety hazards and manage the associated risks;

2.

the organisation has continuously demonstrated compliance with point 145.A.85 and it has full control over all changes;

3.

no level 1 findings have been issued;

4.

all corrective actions have been implemented within the time period that was accepted or extended by the CAA as provided for in point 145.B.350.

(e)

Notwithstanding points (c) and (d), the oversight planning cycle may be further extended to a maximum of 48 months if, in addition to the conditions provided in points (d)(1) to (4), the organisation has established, and the CAA has approved, an effective continuous system for reporting to the CAA on the safety performance and regulatory compliance of the organisation itself.

(f)

The oversight planning cycle may be shortened if there is evidence that the safety performance of the organisation has decreased.

(g)

The oversight programme must include records of the dates when assessments, audits, inspections and meetings are due, and when assessments, audits, inspections and meetings have been effectively carried out.

(h)

At the completion of each oversight planning cycle, the CAA must issue a recommendation report on the continuation of the approval, reflecting the results of the oversight.

145.B.310Initial certification procedureU.K.
(a)

Upon receiving an application from an organisation for the initial issue of a certificate, the CAA must verify the organisation’s compliance with the applicable requirements.

(b)

The CAA must convene a meeting with the accountable manager of the applicant at least once during the investigation for initial certification to ensure that that person understands their role and accountability.

(c)

The CAA must record all the findings issued, closure actions as well as the recommendations for the issue of the certificate.

(d)

The CAA must confirm to the organisation in writing all the findings raised during the verification. For initial certification, all findings must be corrected to the satisfaction of the CAA before the certificate can be issued.

(e)

When satisfied that the organisation complies with the applicable requirements, the CAA may:

1.

issue the certificate in Appendix III (CAA Form 3-145) in accordance with the class and rating system provided for in Appendix II;

2.

formally approve the MOE.

(f)

The certificate reference number must be included on the CAA Form 3-145 certificate.

(g)

The certificate must be issued for an unlimited duration. The privileges and the scope of the activities that the organisation is approved to conduct, including any limitations as applicable, must be specified in the terms of approval attached to the certificate.

(h)

To enable the organisation to implement changes without prior CAA approval in accordance with point [F53145.A.70(a)(10)], the CAA must approve the relevant MOE procedure that sets out the scope of such changes and describes how such changes will be managed and notified to the CAA.

Textual Amendments

145.B.330Changes – organisationsU.K.
(a)

Upon receiving an application for a change that requires prior approval, the CAA must verify the organisation’s compliance with the applicable requirements before issuing the approval.

(b)

The CAA must establish the conditions under which the organisation may operate during the change unless the CAA determines that the organisation’s certificate needs to be suspended.

(c)

When it is satisfied that the organisation complies with the applicable requirements, the CAA must approve the change.

(d)

Without prejudice to any additional enforcement measures, if the organisation implements changes requiring prior approval without having received the approval of the CAA pursuant to point (c), the CAA must consider the need to suspend, limit or revoke the organisation’s certificate.

(e)

For changes not requiring prior approval, the CAA must include the review of such changes in its continuing oversight in accordance with the principles set out in point 145.B.300. If any non-compliance is found, the CAA may notify the organisation, request further changes, and act in accordance with point 145.B.350.

145.B.350Findings and corrective actions; observationsU.K.
(a)

The CAA must have a system in place to analyse findings for their safety significance.

(b)

The CAA must issue a level 1 finding when any significant non-compliance is detected with the applicable requirements of Regulation (EU) 2018/1139, with the organisation’s procedures or manuals, or with the organisation’s certificate including the terms of approval, which lowers safety or seriously endangers flight safety.

(c)

Level 1 findings include:

1.

any failure to grant the CAA access to the organisation’s facilities referred to in point 145.A.140 during normal operating hours and after two written requests;

2.

obtaining the organisation certificate or maintaining its validity by falsification of the submitted documentary evidence;

3.

any evidence of malpractice or fraudulent use of the organisation certificate;

4.

the lack of an accountable manager.

(d)

The CAA must issue a level 2 finding when any non-compliance is detected with the applicable requirements of Regulation (EU) 2018/1139, with the organisation’s procedures or manuals, or with the organisation’s certificate including the terms of approval, which is not classified as a level 1 finding.

(e)

Where a finding is detected during oversight or by any other means, the CAA must, without prejudice to any additional action required by Regulation (EU) 2018/1139, communicate the finding in writing to the organisation and request corrective action to address the non-compliance identified.

1.

Where there are any level 1 findings, the CAA must take immediate and appropriate action to prohibit or limit the activities of the organisation involved and, if appropriate, it must take action to revoke the certificate or to limit or suspend it in whole or in part, depending on the extent of the level 1 finding, until successful corrective action has been taken by the organisation.

2.

Where there are any level 2 findings, the CAA must:

(i)

grant the organisation a corrective action implementation period appropriate to the nature of the finding which must not be more than 3 months. The period must commence from the date of the written communication referred to in point (e). The CAA may extend the corrective action implementation period referred to in point (e) provided the relevant organisation has agreed a corrective action plan with the CAA;

(ii)

assess the corrective action plan and implementation plan proposed by the organisation and accept them if they are sufficient to address the non-compliance.

3.

If the organisation fails to submit an acceptable corrective action plan, or fails to perform the corrective action within the time period accepted or extended by the CAA, the CAA must raise the finding to level 1 and action must be taken as laid down in point (e)(1).

4.

The CAA must record all the findings that it has raised or that have been communicated to it and, where applicable, the enforcement measures it has applied, as well as all corrective actions and the dates of the action closures for all the findings.

(f)

The CAA may issue observations for any of the following cases not requiring level 1 or level 2 findings:

1.

for any item whose performance has been assessed to be ineffective;

2.

when it has been identified that an item has the potential to cause a non-compliance under point (b) or (d);

3.

when suggestions or improvements are of interest for the overall safety performance of the organisation.

(g)

The CAA must communicate the observations issued under this point in writing to the organisation and must keep a record of those observations.

145.B.355Suspension, limitation and revocationU.K.

The CAA must:

(a)

suspend a certificate where it considers that there are reasonable grounds to believe that such action is necessary to prevent a credible threat to aircraft safety;

(b)

suspend, revoke or limit a certificate where such action is required pursuant to point 145.B.350;

(c)

suspend or limit in whole or in part a certificate where unforeseeable circumstances outside the control of the CAA prevent its inspectors from discharging their oversight responsibilities over the oversight planning cycle.]

Textual Amendments

Appendix IAuthorised Release Certificate — [F54CAA Form 1]

Textual Amendments

The provisions of Appendix II to Annex I (Part-M) apply.

[F55Appendix IICLASS AND RATING SYSTEM FOR THE TERMS OF APPROVAL OF PART-145 MAINTENANCE ORGANISATIONS

Textual Amendments

(a)

Except as stated otherwise for the smallest organisations referred to in point (m), the table in point (l) provides the possible classes and ratings to be used to establish the terms of approval of the certificate of the organisation approved in accordance with Annex II (Part-145). An organisation must be granted terms of approval that range from a single class and rating with limitations to all classes and ratings with limitations.

(b)

In addition to the table in point (l), each maintenance organisation is required to indicate its scope of work in its MOE.

(c)

Within the approval classes and ratings established by the CAA, the scope of work specified in the MOE defines the exact limits of its approval. It is therefore essential that the approval classes and ratings and the organisation’s scope of work match.

(d)

A “category A class rating” means that the maintenance organisation may carry out maintenance on aircraft and components (including engines, auxiliary power units (APUs) or both), in accordance with the aircraft maintenance data or, if agreed by the CAA, in accordance with the component maintenance data, only while such components are fitted to the aircraft. Nevertheless, such an A-rated maintenance organisation may temporarily remove a component for maintenance in order to improve access to that component, except when its removal generates the need for additional maintenance that the organisation is not approved to perform. Such removal of component for maintenance by A-rated maintenance organisation must be subject to an appropriate control procedure in the MOE. The limitation column must specify the scope of such maintenance in order to indicate the extent of the approval.

(e)

Category A class ratings are subdivided into “Base” or “Line” maintenance categories. Such an organisation may be approved for either “Base” or “Line” maintenance, or both. It should be noted that a “Line” facility located at a main base facility requires a “Line” maintenance approval.

(f)

A “category B class rating” means that the maintenance organisation may carry out maintenance on uninstalled engines, APUs and engines, APU components or a combination of them, in accordance with the engine or APU maintenance data or both, or, if agreed by the CAA, in accordance with the component maintenance data, only while such components are fitted to the engine, the APU or both. Nevertheless, such a B-rated approved maintenance organisation may temporarily remove a component for maintenance in order to improve access to that component, except when its removal generates the need for additional maintenance that the organisation is not approved to perform. The limitation column must specify the scope of such maintenance, thereby indicating the extent of the approval. A maintenance organisation that is approved with a category B class rating may also carry out maintenance on an installed engine during aircraft base and line maintenance, provided that an appropriate control procedure in the MOE has been approved by the CAA. The scope of work in the MOE must reflect those activities if they are permitted by the CAA.

(g)

A “category C class rating” means that the maintenance organisation may carry out maintenance on uninstalled components (excluding complete engines and APUs) that are intended to be fitted on the aircraft or the engine or APU. The limitation column must specify the scope of such maintenance, thereby indicating the extent of the approval. A maintenance organisation that is approved with a category C class rating may also carry out maintenance on an installed component (other than a complete engine or APU) during aircraft base and line maintenance, or at an engine or APU maintenance facility provided that an appropriate control procedure in the MOE has been approved by the CAA. The scope of work in the MOE must reflect those activities if they are permitted by the CAA.

(h)

A “category D class rating” means a self-contained class rating that is not necessarily related to a specific aircraft, engine or other component. The D1 – Non-Destructive Testing (“NDT”) rating is only necessary for a maintenance organisation that carries out NDT as a particular task for another organisation. A maintenance organisation that is approved with a class rating in the A, B or C category may carry out NDT on products that it maintains without the need for a D1 class rating provided that the MOE contains appropriate NDT procedures.

(i)

The limitation column is intended to give the CAA the flexibility to customise an approval for any particular organisation. Ratings may only be mentioned on the approval if they are appropriately limited. The table in point (l) specifies the types of limitations that are possible. It is acceptable to stress in the limitation column the maintenance task rather than the type or manufacturer of the aircraft or engine, if that is more appropriate to the organisation (an example could be avionics systems installations and the related maintenance). If that is mentioned in the limitation column, it indicates that the maintenance organisation is approved to carry out maintenance up to and including that particular type or task.

(j)

When reference is made to the series, type and group in the limitation column of class A and B, it must be understood as follows:

  • “series” means a specific type series such as the Airbus 300, 310, 319, the Boeing 737-300 series, RB211-524 series, Cessna 150, Cessna 172, Beech 55 series or the Continental O-200 series;

  • “type” means a specific type or model such as the Airbus 310-240 type, the RB 211-524 B4 type, or the Cessna 172RG type. Any number of series or types may be quoted;

  • “group” means, for example, Cessna single piston engine aircraft or Lycoming non-supercharged piston engines, etc.

(k)

By way of derogation from point [F56145.A.85], where a component capability list is used that could be subject to frequent amendments, then the organisation may propose to include such amendments in the procedure referred to in point [F57145.A.70(a)(10)] for changes not requiring prior approval.

(l)

Limitation

CLASSRATINGLIMITATIONBASELINE
AIRCRAFT

A1

Aeroplanes above 5,700kg maximum take- off mass (MTOM)

[Must state the aeroplane manufacturer or the group or series or type and/or the maintenance tasks]

Example: Airbus A320 Series

[YES/NO](*)[YES/NO](*)

A2

Aeroplanes of 5,700kg MTOM and below

[Must state the aeroplane manufacturer or the group or series or type and/or the maintenance tasks]

Example: DHC-6 Twin Otter Series

State whether the issuing of airworthiness review certificates is authorised (only possible for aircraft covered by Annex Vb (Part-ML))

[YES/NO](*)[YES/NO](*)

A3

Helicopters

[Must state the helicopter manufacturer or the group or series or type and/or the maintenance task(s)]

Example: Robinson R44

State whether the issuing of airworthiness review certificates is authorised (only possible for aircraft covered by Annex Vb (Part-ML))

[YES/NO](*)[YES/NO](*)

A4

Aircraft other than A1, A2 and A3 aircraft

[Must state the aircraft category (sailplane, balloon, airship, etc.), the manufacturer or group or series or type and/or the maintenance task(s)]

State whether the issuing of airworthiness review certificates is authorised (only possible for aircraft covered by Annex Vb (Part-ML))

[YES/NO](*)[YES/NO](*)
ENGINES

B1

Turbine

[Must state the engine series or type and/or the maintenance task(s)]

Example: PT6A Series

B2

Piston

[Must state the engine manufacturer or group or series or type and/or the maintenance task(s)]

B3

APU

[Must state the engine manufacturer or series or type and/or the maintenance task(s)]
COMPONENTS OTHER THAN COMPLETE ENGINES OR APUsC1 Air Cond & Press

[Must state the aircraft type or aircraft manufacturer or component manufacturer or the particular component and/or cross-refer to a capability list in the exposition and/or the maintenance task(s)]

Example: PT6A Fuel Control

C2 Auto Flight
C3 Comms and Nav
C4 Doors — Hatches
C5 Electrical Power & Lights
C6 Equipment
C7 Engine – APU
C8 Flight Controls
C9 Fuel
C10 Helicopter – Rotors
C11 Helicopter – Trans
C12 Hydraulic Power
C13 Indicating – recording system
C14 Landing Gear
C15 Oxygen
C16 Propellers
C17 Pneumatic & Vacuum
C18 Protection ice/rain/fire
C19 Windows
C20 Structural
C21 Water ballast
C22 Propulsion Augmentation
SPECIALISED SERVICESD1 Non-Destructive Testing[Must state particular NDT method(s)]

(*)

Delete as appropriate.

(m)

A maintenance organisation which employs only one person to both plan and carry out all maintenance activities can only hold limited terms of approval. The maximum permissible limits are as follows.

Maximum permissible limits table.
(n)

It should be noted that such an organisation may be further limited by the CAA in the terms of approval depending on the capabilities of the particular organisation.]

Textual Amendments

[F26[X2Appendix III

F58F59F60F61F62F63F64F65F66F67 Maintenance Organisation Certificate — EASA Form 3-145]] U.K.

Textual Amendments

F58Annex 2 Appendix 3: on the first page of the form, the words "United Kingdom" substituted for "[Member State (*)] A Member of the European Union (**)" (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(a)(i) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)

F59Annex 2 Appendix 3: on the first page of the form, the words "United Kingdom" substituted for "[Member State Code (*)]" (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(a)(ii) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)

F60Annex 2 Appendix 3: on the first page of the form, the words "Civil Aviation Authority" substituted for "[Competent authority of the Member State (*)]" (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(a)(iii) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)

F61Annex 2 Appendix 3: on the first page of the form, the words "For the CAA" substituted for "For the competent authority: [Competent authority of the Member State (*)]" (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(a)(iv) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)

F62Annex 2 Appendix 3: on the first page of the form, the words "CAA Form 3-145 Issue 1" substituted for "EASA Form 3-145 Issue 4" (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(a)(v) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12 and by S.I. 2020/1116, regs. 1(3), 26); 2020 c. 1, Sch. 5 para. 1(1)

F63Annex 2 Appendix 3: on the first page of the form, the notes at "(*)" and "(**)" are omitted (31.12.2020) by virtue of The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(a)(vi) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)

F64Annex 2 Appendix 3: on the second page of the form, the words "United Kingdom" substituted for "[Member State Code (*)]" (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(b)(i) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)

F65Annex 2 Appendix 3: on the second page of the form, the words "For the CAA" substituted for "For the competent authority: [Competent authority of the Member State (*)]" (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(b)(ii) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)

F66Annex 2 Appendix 3: on the second page of the form, the words "CAA Form 3-145 Issue 1" substituted for "EASA Form 3-145 Issue 4" (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(b)(iii) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12 and by S.I. 2020/1116, regs. 1(3), 26); 2020 c. 1, Sch. 5 para. 1(1)

F67Annex 2 Appendix 3: on the second page of the form, the note at "(*)" is omitted (31.12.2020) by virtue of The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 267(3)(b)(iv) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)

Appendix IVConditions for the use of staff not qualified in accordance with Annex III (Part-66) referred to in points 145.A.30(j)1 and 2

1.Certifying staff in compliance with all the following conditions are deemed to meet the intent of point 145.A.30(j)(1) and (2):U.K.

(a)

The person shall hold a licence or a certifying staff authorisation issued under national regulations in full compliance with ICAO Annex 1.

(b)

The scope of work of the person shall not exceed the scope of work defined by the national licence or the certifying staff authorisation, whatever is the most restrictive.

(c)

The person shall demonstrate he/she received the training on human factors and aviation legislation referred to in modules 9 and 10 of Appendix I to Annex III (Part-66).

(d)

The person shall demonstrate 5 years maintenance experience for line maintenance certifying staff and 8 years for base maintenance certifying staff. However, those persons whose authorised tasks do not exceed those of a Part-66 category A certifying staff, need to demonstrate 3 years maintenance experience only.

(e)

Line maintenance certifying staff and base maintenance support staff shall demonstrate he/she received type training and passed examination at the category B1, B2 or B3 level, as applicable, referred to in Appendix III to Annex III (Part-66) for each aircraft type in the scope of work referred to in point (b). Those persons whose scope of work does not exceed those of a category A certifying staff may however receive task training in lieu of a complete type training.

(f)

Base maintenance certifying staff shall demonstrate he/she received type training and passed examination at the category C level referred to in Appendix III to Annex III (Part-66) for each aircraft type in the scope of work referred to in point (b), except that for the first aircraft type, training and examination shall be at the category B1, B2 or B3 level of Appendix III.

2.Protected rightsU.K.

(a)

The personnel having privileges before the entry into force of the relevant requirements of Annex III (Part-66) may continue to exercise them without the need to comply with points 1(c) to 1(f).

(b)

However after that date any certifying staff willing to extend the scope of their authorisation to include additional privileges shall comply with point 1.

(c)

Notwithstanding point 2(b) above, in the case of additional type training, compliance with points 1(c) and 1(d) is not required.