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I've noticed in recent weeks a small door that opens on the fuselage near the 76's tail. It's also present behind the 777's tail. Anyone know what door this is? Is it the opening for the APU bleed air or something else?
Here's a video which will explain what I'm talking about:
Boeing 717, 737, 747, 757, 767, 777 all have doors down the rear end for APU inlet, with the exception on the 737 where its a naca duct type on the right hand side of the airframe.
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