CS ACNS.E.RVSM.010 Required functions

ED Decision 2013/031/R

(See AMC1 ACNS.E.RVSM.010)

The system:

(a) provides indication to the flight crew of the pressure altitude being flown;

(b) based on the signal produced by the altimetry system, automatically maintains a selected flight level with its altitude control system;

(c) provides an alert to the flight crew when the altitude displayed to the flight crew deviates from the selected altitude by a value of ±60 m (±200 ft) or greater;

(d) automatically reports pressure altitude;

(e) provides an output to the aircraft transponder.

AMC1 ACNS.E.RVSM.010 Required functions

ED Decision 2013/031/R

The signal representing the altitude alerting system may be used either directly, or combined with other sensor signals. The signal may be an altitude deviation signal, relative to the selected altitude, or a suitable absolute altitude signal.