IDG
Unfortunately the APU is NOT reliable. I once had a departure with #1 gen inop. (They didn't want to take a delay to change it). We were told to use the APU for the flight as the we only needed 2 generators (MEL). Well, on the return flight, at night, over a bit of water, the APU did an Auto Shutdown. So with only one gen working we made a landing short of destination which grounded the flight. Became a very expensive flight. Don't rely on the APU, ever.
T
Last edited by thermostat; 2nd December 2012 at 19:50.