The Air Navigation (Fourth Amendment) Order 1999

Airborne Collision Avoidance Systems

4.—(1) After article 44 there shall be inserted:

“Use of airborne collision avoidance system

44A.   On any flight on which an airborne collision avoidance system is required by paragraph 1 of Schedule 5 to this Order to be carried in an aeroplane, the system shall be operated:

(a) in the case of an aircraft to which article 27 applies, in accordance with procedures contained in the Operations Manual for the aircraft;

(b) in the case of an aircraft registered in the United Kingdom to which article 27 does not apply, in accordance with procedures which are suitable having regard to the purposes of the equipment; or

(c) in the case of an aircraft which is not registered in the United Kingdom, in accordance with any procedures with which it is required to comply under the law of the country in which the aircraft is registered.”.

(2) In Schedule 5, for the Table at paragraph 2, there shall be substituted:

“2.  

Table

Aircraft and Circumstances of Flight	Scale of Equipment Required
	A	B	C	D	E	F	G	H	J
* Unless the appropriate air traffic control unit otherwise permits in relation to the particular flight and provided that the aircraft complies with any instructions which the air traffic control unit may give in the particular case.
# Provided that non-public transport aircraft flying in Class D and E airspace shall not be required to be provided with distance measuring equipment.”.
(1) All aircraft (other than gliders) within the United Kingdom: (a) when flying under Instrument Flight Rules within controlled airspace	A*				E*	F*#
(b) when flying within controlled airspace	A*
(c) when making an approach to landing at an aerodrome notified for the purpose of this sub-paragraph							G*
(2) All aircraft within the United Kingdom:
(a) when flying at or above flight level 245	A*
(b) when flying within airspace notified for the purposes of this sub-paragraph	A*
(3) All aircraft (other than gliders) within the United Kingdom: (a) when flying at or above flight level 245					E*	F*
(b) when flying within airspace notified for the purposes of this sub-paragraph					E*
(c) when flying at or above flight level 100					E*
(4) All aircraft registered in the United Kingdom, wherever they may be: (a) when flying for the purpose of public transport under Instrument Flight Rules: (i) while making an approach to landing	A		C	D				H
(ii) on all other occasions	A		C					H
(b) subject to sub-paragraph (d), multi-engined aircraft when flying for the purpose of public transport under Visual Flight Rules	A							H
(c) subject to sub-paragraph (d), single engined aircraft when flying for the purpose of public transport under Visual Flight Rules: (i) over a route on which navigation is effected solely by visual reference to landmarks	A
(ii) on all other occasions	A	B
(d) aircraft which come within paragraphs (4)(b) and (4)(c) above solely by virtue of the provisions of article 119(2)(c) may carry instead of the requirements of the said paragraphs (4)(b) and (4)(c); (i) over a route on which navigation is not effected solely by visual reference to landmarks	A	B
(ii) over water, beyond gliding distance from any land	A
(e) when flying under Instrument Flight Rules within controlled airspace and not required to comply with paragraph (3)(a) above	A*
(5) On and after 1 January 2000 all aeroplanes registered in the United Kingdom, wherever they may be, and all aeroplanes wherever registered when flying in the United Kingdom, powered by one or more turbine jets or turbine propeller engines and either having a maximum take-off weight exceeding 15,000 kg or which in accordance with the certificate of airworthiness in force in respect thereof may carry more than 30 passengers									J

(3) In Schedule 5, paragraph 3, after Scale H there shall be inserted:

“Scale J

An airborne collision avoidance system.”.

(4) In Schedule 5, paragraph 4, after sub-paragraph (4) there shall be inserted:

“(5) “Airborne collision avoidance system” means an aeroplane system which conforms to requirements prescribed for the purpose; is based on secondary surveillance radar transponder signals; operates independently of ground based equipment and which is designed to provide advice and appropriate avoidance manoeuvres to the pilot in relation to other aeroplanes which are equipped with secondary surveillance radar and are in undue proximity.”.

(5) In Schedule 10, Part A, paragraph (a), after sub-paragraph (xvii) there shall be inserted:

“(xviii) procedures for the operation of any airborne collision avoidance system carried on the aircraft.”.

(6) In Schedule 12, Part A in the column headed “Article of Order” before “45” there shall be inserted “44A” and adjacent thereto in the column headed “Subject Matter” there shall be inserted “Requirement for airborne collision avoidance system”.