A320: VENT SKIN VALVE FAULT
Thread Starter
Joined: Apr 2012
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From: Within ASEAN
A320: VENT SKIN VALVE FAULT
Just question for A320 drivers.. Why does VENT SKIN VALVE FAULT result in
a descend to FL100 or MEA if selecting Blower & EXTRACT to OVRD does NOT solve the problem. ??
Thanks
a descend to FL100 or MEA if selecting Blower & EXTRACT to OVRD does NOT solve the problem. ??
Thanks
Joined: Jun 2007
Posts: 3,443
Likes: 39
From: Wanderlust
In the air ventilation system should be in closed configuration. When extract valve fails in full open position there is pressurisation leak. Selecting blower and extract to override sends additional signals to close them but if it fails you need to come down to 10000'.
Joined: Mar 2005
Posts: 1,338
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From: Uh... Where was I?
as a additional note, the outflow should not be used to compensate for the leakage through the outlet skin valve, as some training captains point out. You have to descend because even if the outflow valve is capable to maintain the cabin altitude, that valve is not meant for such differential pressure
