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25th Oct 2016, 00:35

#11 (permalink)

galaxy flyer

Join Date: Dec 2002

Location: Where the Quaboag River flows, USA

Age: 71

Posts: 3,414

Likes: 1

Received 3 Likes on 3 Posts

Not a 747 guy, but one reason I heard (recommended for my current stead) is opening the door allows a cold soaked APU to warm enough to help the start.

GF

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