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25th October 2002 | 21:06

#19 (permalink)

fadec_primary_channel

Joined: Jun 2001

Posts: 173

Likes: 0

From: UK

Can only answer q1 part a

The noise is the PTU as mentioned earlier,

It does a self test between engine starts, and also ops during gnd handling procedures, i.e. opening of the cargo doors!

Ta