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Thread: Diff between Outflow valves and Positive/Negative Pressure valves?
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Old 6th Apr 2018, 11:50
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flyburg
 
Join Date: Nov 2000
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Originally Posted by NSEU
Even during 747 maintenance ground tests of the manual system, totally focussed on keeping the pressure and pressure rate within a specific range, I found it challenging. I can't even imagine flying the aircraft at the same time. A third crew member would come in handy.
Actually, wasn’t too bad if memory serves me right but we were with three pilots.
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