Navigate / EASA

CS ACNS.D.AC.025 Flight deck interface

ED Decision 2013/031/R

(See AMC1 ACNS.D.AC.025)

A means is provided to:

(a)     select Mode A Code including emergency indicators;

(b)     initiate the IDENT (SPI) feature;

(c)      notify the flight crew when the transmission of pressure altitude information has been inhibited if a means to inhibit the transmission of pressure altitude is provided;

(d)     select the transponder to the ‘standby’ or ‘OFF’ condition;

(e)     indicate the non-operational status or failure of the transponder system without undue delay and without the need for flight crew action;

(f)      display the selected Mode A code to the flight crew; and

(g)     select the pressure altitude source to be connected to the active transponder.