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Thread: RELIABILITY OF THE OLD AND RECENT APU's???
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Old 18th March 2006 | 01:47
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cvrurass
 
Joined: Mar 2006
Posts: 34
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From: Australia
Apu air in the air
In the case of the 747-400 why rely on the APU air when you have 4 other good sources of air at cruise? Air does supply power to hyd for most flight controls but they also have electrics for back up.
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