[F1OPS 1.630 General introduction U.K.
An operator shall ensure that a flight does not commence unless the instruments and equipment required under this Subpart are:
approved, except as specified in subparagraph (c), and installed in accordance with the requirements applicable to them, including the minimum performance standard and the operational and airworthiness requirements; and
in operable condition for the kind of operation being conducted except as provided in the MEL (OPS 1.030 refers).
Instruments and equipment minimum performance standards are those prescribed in the applicable European Technical Standard Orders (ETSO) as listed in applicable Specifications on European Technical Standard Orders (CS-TSO), unless different performance standards are prescribed in the operational or airworthiness codes. Instruments and equipment complying with design and performance specifications other than ETSO on the date of OPS implementation may remain in service, or be installed, unless additional requirements are prescribed in this Subpart. Instruments and equipment that have already been approved do not need to comply with a revised ETSO or a revised specification, other than ETSO, unless a retroactive requirement is prescribed.
The following items shall not be required to have an equipment approval:
fuses referred to in OPS 1.635;
electric torches referred to in OPS 1.640 (a)4.;
an accurate time piece referred to in OPS 1.650 (b) and 1.652 (b);
chart holder referred to in OPS 1.652 (n).
first-aid kits referred to in OPS 1.745;
emergency medical kit referred to in OPS 1.755;
megaphones referred to in OPS 1.810;
survival and pyrotechnic signalling equipment referred to in OPS 1.835 (a) and (c); and
sea anchors and equipment for mooring, anchoring or manoeuvring seaplanes and amphibians on water referred to in OPS 1.840;
child restraint devices referred to in OPS 1.730(a)3.
If equipment is to be used by one flight crew member at his/her station during flight, it must be readily operable from his/her station. When a single item of equipment is required to be operated by more than one flight crew member it must be installed so that the equipment is readily operable from any station at which the equipment is required to be operated.
Those instruments that are used by any one flight crew member shall be so arranged as to permit the flight crew member to see the indications readily from his/her station, with the minimum practicable deviation from the position and line of vision which he/she normally assumes when looking forward along the flight path. Whenever a single instrument is required in an aeroplane operated by more than 1 flight crew member it must be installed so that the instrument is visible from each applicable flight crew station.]