Ok did it again, it seems I can get it to happen100% of the time. I must not be following the checklists correctly or something. For starters the amps on the left show a negative number when looking at the apu panel. And second, in the FMC my cruise altitude is also showing as a negative number. -12000. And I can't edit it. Very strange!David

Very strange indeed. This a head scratcher for us as we've never even heard of situation like this before. :(

I was missing the step about pressing the ground power on button. So I must have zapped the batteries by starting the apu off of them? That would 100% cause the strange battery readouts then the flashing textures. Then for the cruising altitude at -12000 I was not manually setting the flight level in the computer, just leaving it at the default setting which I think said optimum altitude

I was missing the step about pressing the ground power on button. So I must have zapped the batteries by starting the apu off of them? That would 100% cause the strange battery readouts then the flashing textures. Then for the cruising altitude at -12000 I was not manually setting the flight level in the computer, just leaving it at the default setting which I think said optimum altitude

If the FMS is coming up with absurd cruising altitudes for the optimum.... you're setting something up that is outside the boundaries of the aircraft's flight parameters.

I was missing the step about pressing the ground power on button. So I must have zapped the batteries by starting the apu off of them? That would 100% cause the strange battery readouts then the flashing textures. Then for the cruising altitude at -12000 I was not manually setting the flight level in the computer, just leaving it at the default setting which I think said optimum altitude

A nice feature in FSUIPC is that you can set "extended battery life" and overcome the default FS short battery life. :(

I've also had the -12000 show up from time to time. However I COULD go in there and edit it, so it hasn't really been a problem. However I have been running into some other weird things. I'll post more on it later if I can consistently reproduce anything.

I just wish you'd post it in our forums. AVSIM isn't our support area. :(

I've also had the -12000 show up from time to time. However I COULD go in there and edit it, so it hasn't really been a problem. However I have been running into some other weird things. I'll post more on it later if I can consistently reproduce anything.

Our forums are open to customer and non customer alike. Registration and login are all that is required.Please post support issues there. :(