第3條
The scales of radio and radio navigation equipment indicated in the foregoing Table shall be as follows: Scale A Radio equipment capable of maintaining direct two-way communication with the appropriate aeronautical radio stations. Scale B Radio navigation equipment capable of enabling the aircraft to be navigated on the intended route including such equipment as may be prescribed. Scale C Radio equipment capable of receiving from the appropriate aeronautical radio stations meteorological broadcasts relevant to the intended flight. Scale D 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 E 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 F Scale G Radio navigation equipment capable of enabling the aircraft to make an approach to landing using the Instrument Landing System. Scale H Radio and radio navigation equipment capable of enabling the aircraft to be navigated along the intended route including:Radio navigation equipment capable of enabling the aircraft to be navigated on the intended route including:Except that an aircraft may fly notwithstanding that it does not carry the equipment specified in this Scale if it carries alternate radio navigation equipment or navigational equipment approved by the Chief Executive in writing in accordance with the provisions of Article 13(7) of this Order.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:(i)automatic direction finding equipment;(ii)distance measuring equipment; and(iii)VHF omni-range equipment. (a)automatic direction finding equipment;(b)distance measuring equipment;(c)duplicated VHF omni-range equipment; and(d)a 75 MHz marker beacon receiver. (i)it is not reasonably practicable for the repair or replacement of that item to be carried out before the beginning of the flight;(ii)the aircraft has not made more than one flight since the item was last serviceable; and(iii)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 J An airborne collision avoidance system.