British Airways A320 start-up, taxi and takeoff at Heathrow | VERY LONG PTU 

00:45 Pushback
02:45 Engine 2 start-up
04:27 Flaps 2 extension
06:56 - 22:40 Super-long barking noise PTU sound
08:50 Engine 1 start-up during taxi
32:21 Takeoff Runway 09R
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