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Old 23rd September 2011 | 13:30
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B18210
 
Joined: Mar 2010
Posts: 5
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From: TPE
When will positive pressure relief valves automatically open?
Hi folks

My question is as subject and I still cannot figure why even though the IP has given me two scenerios...
1. outflow valves failed and fully closed
I'd like to know what kinda situations will cause the cabin differential exceeds the limitation to make the valves open when outflow valves are fully closed.
2. CONDITIONAL, wind switch from strong tailwind to headwind
I have no clue on this statement

Thanks for clearing up the hints for me!
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