APU
Quick question from SLF (PPL trainee). Does the APU on a 737-700 form part of the MEL? We flew out of ABZ last week on a GSM flight that had earlier in the day been delayed due to the aircraft going 'technical' for about 8 hours. As we boarded via the rear steps the APU sounded awful making almost 'surge' or 'back-firing' noises. After push-back, the pilot announced that we were going to be moved back towards the stand and the engines fired up using an external cart due to problems with the APU. I was somewhat uneasy about all of this - we duly took off and continued on our way to PMI uneventfully.
Any comments?