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That Opening/hole On A DC-10  
User currently offlinePizzapolli From United States of America, joined Oct 2001, 243 posts, RR: 0
Posted (12 years 11 months 2 weeks 5 days 19 hours ago) and read 3919 times:

What is that opening that you see on the fuselage of DC-10 in front of the wing below the window line. It looks like a fuel door thats sideways, but of couse is not. Is it some sort of air intake for the APU? Heres a link to a picture with one showing, its right below the G in Varig:

5 replies: All unread, jump to last
User currently offlineMighluss From Spain, joined Oct 2001, 988 posts, RR: 7
Reply 1, posted (12 years 11 months 2 weeks 5 days 19 hours ago) and read 3876 times:

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Photo © Konstantin von Wedelstaedt



User currently offlineRydawg82 From United States of America, joined Sep 2001, 877 posts, RR: 7
Reply 2, posted (12 years 11 months 2 weeks 5 days 19 hours ago) and read 3838 times:

Here is everything you could wish to know about that opening.....Ryan

You can take the pup out of Alaska, but you can't take the Alaska out of the pup.
User currently offlineSrbmod From , joined Dec 1969, posts, RR:
Reply 3, posted (12 years 11 months 2 weeks 5 days 13 hours ago) and read 3704 times:

I was curious about that myself, I saw one of World's DC-10Fs parked over by South Cargo @ ATL last week, and noticed that valve and was curious about it.

User currently offlineIahcsr From United States of America, joined Jun 1999, 3766 posts, RR: 40
Reply 4, posted (12 years 11 months 2 weeks 5 days 12 hours ago) and read 3620 times:
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For those who choose not to read the link above, the short answer is that it's part of the pressurization system. The DC-9/MD-80 has a similar valve design, but it's located below the left engine, so it's not as visible.

Working very hard to Fly Right....
User currently offlineJETPILOT From United States of America, joined May 1999, 3130 posts, RR: 27
Reply 5, posted (12 years 11 months 2 weeks 3 days 4 hours ago) and read 3368 times:

It's a pressurization dump valve. DC10's arent pressurized on the ground. When the plane lands the dump valve opens to equalize pressurization if the auto/manual system fails to keep the pressurization schedule which should relieve pressure 1000' (?) above field elevation.


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