CS 25.20 Scope

(a)The requirements of this Subpart B apply to aeroplanes powered with turbine engines –

(1)Without contingency thrust ratings, and

(2)For which it is assumed that thrust is not increased following engine failure during take-off except as specified in sub-paragraph (c).

(b)In the absence of an appropriate investigation of operational implications these requirements do not necessarily cover –

(1)Automatic landings.

(2)Approaches and landings with decision heights of less than 60 m (200 ft).

(3)Operations on unprepared runway surfaces.

(c)If the aeroplane is equipped with an engine control system that automatically resets the power or thrust on the operating engine(s) when any engine fails during take-off, additional requirements pertaining to aeroplane performance and limitations and the functioning and reliability of the system, contained in Appendix I, must be complied with.