AMC 25.143(h) Manoeuvre Capability

• ED Decision 2007/010/R found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

AMC 25.143(h) Manoeuvre Capability ED Decision 2007/010/R 1 As an alternative to a detailed quantitative demonstration and analysis of coordinated turn capabilities, the levels of manoeuvrability free of stall warning required by [CS 25.143(h)](#_DxCrossRefBm1709820670) can normally be assumed where the scheduled operating speeds are not less than – 1.08 VSW for V2 1.16 VSW for V2 + xx, VFTO and VREF where VSW is the stall warning speed determined at idle power and at 1g in the same conditions of configuration, weight and centre of gravity, all expressed in CAS. Neverthless, a limited number of turning flight manoeuvres should be conducted to confirm qualitatively that the aeroplane does meet the manoeuvre bank angle objectives (e.g. for an aeroplane with a significant Mach effect on the CL/α relationship) and does not exhibit other characteristics which might interfere with normal manoeuvring. 2 The effect of thrust or power is normally a function of thrust to weight ratio alone and, therefore, it is acceptable for flight test purposes to use the thrust or power setting that is consistent with a WAT-limited climb gradient at the test conditions of weight, altitude and temperature. However, if the manoeuvre margin to stall warning (or other relevant characteristic that might interfere with normal manoeuvring) is reduced with increasing thrust or power, the critical conditions of both thrust or power and thrust-to-weight ratio must be taken into account when demonstrating the required manoeuvring capabilities. [Amdt 25/3]