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UA's Bellies  
User currently offlineDuke From Canada, joined Sep 1999, 1155 posts, RR: 2
Posted (13 years 5 months 5 days 14 hours ago) and read 789 times:

Can someone please tell me why I keep seeing United Air Lines jets with
a long bare metal strip (sometimes maybe even two?) on their belly?
Is this to save money on paint?  Smile

2 replies: All unread, jump to last
 
User currently offlineJetfixer From United States of America, joined Oct 2000, 94 posts, RR: 0
Reply 1, posted (13 years 5 months 4 days 12 hours ago) and read 743 times:

The bottom of the aircraft isn't always bare metal.

I think the airbus's are painted blue on the bottom of the fuselage and the Boeing's are sometimes bare metal and sometimes painted. The color of the paint used for the strip on the Boeings is a Whitish light light grey color, kind of similar to the wing paint color with yellow stains from the Skydrol.

Why some are painted and some are bare metal, I don't know.

Also why they are painted that way, can't answer that either.


Jetfixer  Smokin cool


User currently offlineRyeFly From United States of America, joined Jun 2000, 1396 posts, RR: 0
Reply 2, posted (13 years 5 months 4 days 11 hours ago) and read 723 times:

It's a good question, and one where I actually have an answer too.


Click for large version
Click here for full size photo!

Photo © Colin Abbott



In the Nov/Dec 2000 issue of Airliners Magazine the exact same question was asked and here is what they had to say...

"Those rectangular areas contain antennae, vents, intakes and exhausts. Leaving the sections unpainted avoids the additional maintenance costs incurred to mask off each item for painting. Also, water and slush are kicked up by the nose gear and various fluids are used in aircraft operation tend to pool in these areas. The fluids take a toll on the finish and corrode the paint. United periodically washes and seals aircraft exteriors and paint crews perform touch-up work when necessary. The traveling public only sees this area of the aircraft when it passes overhead.

Instead of a sealant, United's Airbus aircraft rely on exterior paint as corrosion protection. Therefore, the UA A319 and A320 fleet contain a solid-blue underside, unlike the Boeings."


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