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Time To Repair An A/c When Depressurization  
User currently offlineLTBEWR From United States of America, joined Jan 2004, 13198 posts, RR: 15
Posted (9 years 10 months 4 days 14 hours ago) and read 2787 times:

How long does it take to repair an aircraft that suffers from a Depressurization event, that is to reset the O2 masks, covers, and the system over the time required physical repairs that must be done to an a/c to fix the original cause of the Depressurization?
Also, what is the most common cause of Depressurization?

2 replies: All unread, jump to last
 
User currently offlineAirplay From , joined Dec 1969, posts, RR:
Reply 1, posted (9 years 10 months 4 days 13 hours ago) and read 2732 times:

This is a very rare occurance that typically would result from pretty major failures.

Furthermore any airplane whose sevice ceiling is above 42,000 feet (41,000 feet in Canada for some reason) must comply with a "special condition" for high altitude flight.

This special condition requires analysis that shows that the chances of a decompression is in the order of one occurance in one billion flight hours. So its really not likely.

I've seen the masks come down several times for testing or inadvertantly by maintenance. It really sucks on large airplanes can can take several hours to restow the masks.

As for physical damage, unless you are talking a bomb, again its unlikely. And damage from a bomb typically doesn't need to be repaired. If you know what I mean...

 Smile


User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 2, posted (9 years 10 months 3 days 10 hours ago) and read 1816 times:

Resetting the O2 masks can be time consuming.
Although to test the deployment of O2 masks does not need the O2 mask panel to open fully if placed in test mode,by use of the panel latch.
This helps in testing.
what is the most common cause of Depressurization
Blown window,very rare though.
Leaking seal.
Faulty OFV.
to name a few.
regds
MEL



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