Posts: 235
Joined: Fri Jun 01, 2001 8:37 pm

Airbus A320 Question

Fri Mar 29, 2002 9:42 pm


I've got a question about Airbus A320 electrial system
If i press both p/b of the generator to the OFF position , AC BUS 1 and 2 will be no more powered.
The question is: Will the RAT deploy automatically or not in this case?

A clear explanation will be appreciated!

Posts: 209
Joined: Wed Oct 25, 2000 12:28 am

RE: Airbus A320 Question

Sat Mar 30, 2002 1:31 am

Short answer: Yes, the RAT will deploy.

The automatic deployment requires three conditions to be met: AC BUS 1 OFF, AC BUS 2 OFF, ADIRS 1 > 100KT
All fulfilled, the RAT will deploy. As a signal on airspeed is required, it can't happen on ground.
Manual extension is NEVER inhibited, it can be initiated at any time. Thats why the buttons are guarded.


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