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Aviation Photo #5667099 Boeing 747-8F - United Parcel Service - UPS

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    specimen
    United Parcel Service - UPS
    Boeing 747-8F
    Boeing 747-8
    Boeing 747-8
    Boeing
    64257
    1548
    N611UP
    Hong Kong - International (Chek Lap Kok)
    Hong Kong
    China
    August 26, 2019
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Distinct Views: 21,408
Photo Added: September 19, 2019

Comments (5)

59   Brazil
1 month ago
Fuel leak, I suppose.
1 month ago
IMO its automatic fuel dump on detection of excessive Weight ( since its take off ). What say ?
1 month ago
Fuel dump ports are located just inboard of the winglets (little "nub" just outboard of the aileron). Clearly the right side isn't dumping and the vapor trail appears to be coming from the left side well below where the left wing dump port is. You can just see the left winglet above the fuselage with it's tip vortex.

Whatever the vapor is appears to be coming from the #2 engine.
1 month ago
The fuel overflow valves aren't co-located with the fuel dump ports. This is very likely to be excessive fuel flowing out of the overflow vents. For example, see this video (https://www.youtube.com/watch?v=inBaUXyn2l4) where excessive fuel is "leaking" in a 737 (which does not even have a fuel dump system)
28 days ago
Very good. Thanks for the reply! I didn't realize the overflow was a separate valve for overflow.

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