The Air Navigation Order 2005

Article 20(2)

SCHEDULE 5U.K.RADIO COMMUNICATION AND RADIO NAVIGATION EQUIPMENT TO BE CARRIED IN AIRCRAFT

1.  Subject to paragraph 3, every aircraft shall be provided, when flying in the circumstances specified in the first column of the Table in paragraph 2 of this Schedule, with the scales of equipment respectively indicated in the second column of that Table; provided that, if the aircraft is flying in a combination of such circumstances the scales of equipment shall not on that account be required to be duplicated.U.K.

2.  TableU.K.

3.—(1) In the case of sub-paragraphs (1), (2), (3), (4)(a), (4)(c) and (5)(e) of paragraph 2, the specified equipment need not be carried if the appropriate air traffic control unit otherwise permits in relation to the particular flight and the aircraft complies with any instructions which the air traffic control unit may give in the particular case.U.K.

(2) An aircraft which is not a public transport aircraft and which is flying in Class D or Class E airspace shall not be required to be provided with distance measuring equipment in accordance with paragraph (b) of Scale F when flying in the circumstances specified in sub-paragraph (1)(a) of paragraph 2.

4.  The scales of radio communication and radio navigation equipment indicated in the foregoing Table shall be as follows—U.K.

Scale AU.K.

Radio communication equipment capable of maintaining direct two-way communication with the appropriate aeronautical radio stations.

Scale BU.K.

Radio navigation equipment capable of enabling the aircraft to be navigated on the intended route including such equipment as may be prescribed.

Scale CU.K.

Radio communication equipment capable of receiving from the appropriate aeronautical radio stations meteorological broadcasts relevant to the intended flight.

Scale DU.K.

Radio navigation equipment capable of receiving signals from one or more aeronautical radio stations on the surface to enable the aircraft to be guided to a point from which a visual landing can be made at the aerodrome at which the aircraft is to land.

Scale E1U.K.

Secondary surveillance radar equipment which includes a pressure altitude reporting transponder capable of operating in Mode A and Mode C and is capable of being operated in accordance with such instructions as may be given to the aircraft by the air traffic control unit.

Scale E2U.K.

Secondary surveillance radar equipment which includes a pressure altitude reporting transponder capable of operating in Mode A and Mode C and has the capability and functionality prescribed for Mode S Elementary Surveillance and is capable of being operated in accordance with such instructions as may be given to the aircraft by the air traffic control unit.

Scale E3U.K.

Secondary surveillance radar equipment which includes a pressure altitude reporting transponder capable of operating in Mode A and Mode C and has the capability and functionality prescribed for Mode S Enhanced Surveillance and is capable of being operated in accordance with such instructions as may be given to the aircraft by the air traffic control unit.

Scale EEU.K.

The aircraft shall, in the circumstances specified in paragraph 2.1.5.3 of Volume IV (Third Edition July 2002) of Annex 10 to the Chicago Convention, comply with the requirements for antenna diversity set out in that paragraph.

Scale FU.K.

Radio communication and radio navigation equipment capable of enabling the aircraft to be navigated along the intended route including—

(a)automatic direction finding equipment;

(b)distance measuring equipment; and

(c)VHF omni-range equipment.

Scale GU.K.

Radio navigation equipment capable of enabling the aircraft to make an approach to landing using the Instrument Landing System.

Scale HU.K.

(1) Subject to paragraphs (2) and (3), radio navigation equipment capable of enabling the aircraft to be navigated on the intended route including—

(a)automatic direction finding equipment;

(b)distance measuring equipment;

(c)duplicated VHF omni-range equipment; and

(d)a 75 MHz marker beacon receiver.

(2) An aircraft may fly notwithstanding that it does not carry the equipment specified in this Scale if it carries alternative radio navigation equipment or navigational equipment approved in accordance with article 19(9).

(3) Where not more than one item of equipment specified in this Scale is unserviceable when the aircraft is about to begin a flight, the aircraft may nevertheless take off on that flight if—

(a)it is not reasonably practicable for the repair or replacement of that item to be carried out before the beginning of the flight;

(b)the aircraft has not made more than one flight since the item was last serviceable; and

(c)the commander of the aircraft has satisfied himself that, taking into account the latest information available as to the route and aerodrome to be used (including any planned diversion) and the weather conditions likely to be encountered, the flight can be made safely and in accordance with any relevant requirements of the appropriate air traffic control unit.

Scale JU.K.

An airborne collision avoidance system.

5.  In this Schedule—U.K.

(1) “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;

(2) “Automatic direction finding equipment” means radio navigation equipment which automatically indicates the bearing of any radio station transmitting the signals received by such equipment;

(3) “Distance measuring equipment” means radio equipment capable of providing a continuous indication of the aircraft's distance from the appropriate aeronautical radio stations;

(4) “Mode A” means replying to an interrogation from secondary surveillance radar units on the surface to elicit transponder replies for identity and surveillance with identity provided in the form of a 4 digit identity code;

(5) “Mode C” means replying to an interrogation from secondary surveillance radar units on the surface to elicit transponder replies for automatic pressure-altitude transmission and surveillance;

(6) “Secondary surveillance radar equipment” means such type of radio equipment as may be notified as being capable of—

(a)replying to an interrogation from secondary surveillance radar units on the surface; and

(b)being operated in accordance with such instructions as may be given to the aircraft by the appropriate air traffic control unit;

(7) “VHF omni-range equipment” means radio navigation equipment capable of giving visual indications of bearings of the aircraft by means of signals received from very high frequency omni-directional radio ranges.