Originally Posted by
Black Pudding
Not necessarily so. That’s like requiring you to do and APU fire test as you taxi in before you switch it on before engine shut down. You wouldn’t. Why would you presume engineers will always do a test. Your preliminary cockpit procedure requires you to do it on YOUR first flight of the day.
I know cause in our company, aircraft are always shut down completely after the last flight of the day. Then before the first flight in the morning, maintenance will start the APU before the cockpit crew arrive. I never had the chance to come in a dark cockpit so far. Also, never in the 5 years flying Airbus I saw a cockpit crew testing the APU fire pb while it was running. Thus my question. The FCOM Regarding the cockpit preparation assumes the APU was not running. It’s not very clear IMHO that we are supposed to test the APU if already running. In any case, I trust our maintenance to have done it. It’s part of their daily check.