Originally Posted by
pineteam
Maybe I'm missing something but I don't understand why you need to perform the APU fire test. If you arrive at the aircraft and APU is already running, it means the maintenance has turned it on and has done the APU fire test already.
In the company I work for, we only do that test if the cockpit crew arrives at the aircraft and APU is not running.
Different SOP mabe?
Our SOP is that when you pick up an aircraft, you test the APU fire detection, running or not. It has to be tested every day and maybe it was left running from the previous evening and the test is required again (we operate 24/7).