Pizzapolli From United States of America, joined Oct 2001, 241 posts, RR: 0 Posted (8 years 8 months 2 days 16 hours ago) and read 2071 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:
http://www.airliners.net/open.file/361578/L/
Srbmod From United States of America, joined Mar 2001, 16026 posts, RR: 57 Reply 3, posted (8 years 8 months 2 days 9 hours ago) and read 1856 times:
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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.
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Iahcsr From United States of America, joined Jun 1999, 3232 posts, RR: 50 Reply 4, posted (8 years 8 months 2 days 8 hours ago) and read 1772 times:
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.
JETPILOT From United States of America, joined May 1999, 3104 posts, RR: 38 Reply 5, posted (8 years 8 months ago) and read 1520 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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