(1)
300 m, if the flight is conducted under conditions allowing visual course guidance navigation, or if navigational aids are available enabling the pilot to maintain the intended flight path with the same accuracy; or
(2)
600 m, for flights under all other conditions.
(c)
For cases where the intended flight path requires track changes of more than 15°, the operator does not need to consider those obstacles that have a lateral distance greater than:
(1)
600 m, for flights under conditions allowing visual course guidance navigation; or
(2)
900 m, for flights under all other conditions.
(d)
When showing compliance with (a) to (c), the following shall be taken into account:
(1)
the mass of the aeroplane at the commencement of the take-off run;
(2)
the pressure altitude at the aerodrome;
(3)
the ambient temperature at the aerodrome; and
(4)
not more than 50 % of the reported headwind component or not less than 150 % of the reported tailwind component.
CAT.POL.A.315 En-route — multi-engined aeroplanes
(a)
The aeroplane, in the meteorological conditions expected for the flight and in the event of the failure of one engine, with the remaining engines operating within the maximum continuous power conditions specified, shall be capable of continuing flight at or above the relevant minimum altitudes for safe flight stated in the operations manual to a point of 1 000 ft above an aerodrome at which the performance requirements can be met.
(b)
It shall be assumed that, at the point of engine failure:
(1)
the aeroplane is not flying at an altitude exceeding that at which the rate of climb equals 300 ft per minute with all engines operating within the maximum continuous power conditions specified; and
(2)
the en-route gradient with OEI shall be the gross gradient of descent or climb, as appropriate, respectively increased by a gradient of 0.5 %, or decreased by a gradient of 0.5 %.
CAT.POL.A.320 En-route — single-engined aeroplanes
(a)
In the meteorological conditions expected for the flight, and in the event of engine failure, the aeroplane shall be capable of reaching a place at which a safe forced landing can be made.
(b)
It shall be assumed that, at the point of engine failure:
(1)
the aeroplane is not flying at an altitude exceeding that at which the rate of climb equals 300 ft per minute, with the engine operating within the maximum continuous power conditions specified; and
(2)
the en-route gradient is the gross gradient of descent increased by a gradient of
0.5 %.
CAT.POL.A.325 Landing — destination and alternate aerodromes 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：Annexes to the draft Commission Regulation on ‘Air Operations - OPS’(103)
