Noise on A319
I don't think I'm going to be able to describe this accurately enough to give anyone a chance of answering, but here goes....
Flew twice on an Easy A319 last weekend, and both times, during pushback and while the engines were being started, there were a series of quite loud noises. I can only really describe these as a whirring, one longer one of perhaps 1-2 seconds and several shorter ones of less than a second. They sounded like a large electric motor spinning.
I was sitting over the wings, and the noise seemed to come from directly below. They weren't related to the flight surfaces as I was looking out of the window and neither the flaps/slats or ailerons moved.
Can anyone offer a suggestion of what it could have been from my very poor description?