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Answer To Why AA Is Painting 737 Bellies  
User currently offlineAirlineReporter From United States of America, joined Jun 2010, 78 posts, RR: 0
Posted (2 years 10 months 2 weeks 2 days 3 hours ago) and read 16471 times:

There was a previous thread (now archived) on A.net talking about AA painting the bellies of the 737 and I wanted to share the answer I was able to get. AA Now Painting Bellies?! (by AA737-823 Nov 13 2011 in Civil Aviation)#menu27

Answer from American:

“All 737’s have fluid discharge ports along the bottom Aft fuselage. AA has decided to paint the underbelly of the aircraft for aesthetic purposes and to prevent any contact of these fluids with the bare aluminum skin.”

Looks like they are being painted to slow down corrosion of the bellies. Not sure if they will be painting their older 737s and still no official word if they are looking at a possible new livery.

David

15 replies: All unread, jump to last
 
User currently offlinewn700driver From , joined Dec 1969, posts, RR:
Reply 1, posted (2 years 10 months 2 weeks 2 days 3 hours ago) and read 16348 times:

Nah, I see right through that excuse. I know what they're really doing. Over time, a little paint here, little more paint there, and next thing you know, Bam!, they have an actual paint scheme. It's livery creep, I tell you!

Thanks for the info. I thought it was something like that, but it's nice to see confirmation. I think there are five or six so-painted 738s now...


User currently offlinecatiii From United States of America, joined Mar 2008, 3045 posts, RR: 4
Reply 2, posted (2 years 10 months 2 weeks 2 days 3 hours ago) and read 16275 times:

Quoting wn700driver (Reply 1):
Nah, I see right through that excuse.

Agreed. A likely excuse. We all know it's to prevent those vain rampers from wasting time staring at their reflections in the fuselage.


User currently offlineN766UA From United States of America, joined Jul 1999, 8308 posts, RR: 23
Reply 3, posted (2 years 10 months 2 weeks 2 days 3 hours ago) and read 16134 times:

Interesting! I saw one of these 738s at DCA the other day, spent like 45 seconds staring at it thinking I was imagining it. Thanks for posting!


This Website Censors Me
User currently onlineNewark727 From United States of America, joined Dec 2009, 1366 posts, RR: 0
Reply 4, posted (2 years 10 months 2 weeks 2 days 3 hours ago) and read 16078 times:

Quoting AirlineReporter (Thread starter):
Not sure if they will be painting their older 737s and still no official word if they are looking at a possible new livery.

I think they might be. I saw N934AN on Tuesday with partial belly paint and that one is older.


User currently offlineByrdluvs747 From United States of America, joined Jul 2004, 2368 posts, RR: 1
Reply 5, posted (2 years 10 months 2 weeks 1 day 22 hours ago) and read 15266 times:

this seems like a design flaw to me. Why would Boeing put a discharge port any place but at the very rear of the aircraft to prevent fluid from coming in contact with other parts of the fuselage? Is static electricity discharge a concern at that point?


The 747: The hands who designed it were guided by god.
User currently offlineyeelep From United States of America, joined Apr 2011, 666 posts, RR: 0
Reply 6, posted (2 years 10 months 2 weeks 1 day 16 hours ago) and read 14708 times:

If it is a design flaw, its one that is shared with pretty much all commercial aircraft. Weight and unnecessary complication are two reasons to have the drains where they are. That said, the 737-800/900 does have a problem with the lav blower vent discharging organic matter.

User currently offline5MillionMiler From Australia, joined Sep 2011, 88 posts, RR: 0
Reply 7, posted (2 years 10 months 2 weeks 1 day 14 hours ago) and read 12720 times:

Stains impact liveries... Qantas had to paint all RR engines grey because the oil seapage made the white nacelles look filthy

User currently offlineT5towbar From United States of America, joined Feb 2009, 567 posts, RR: 1
Reply 8, posted (2 years 10 months 2 weeks 1 day 13 hours ago) and read 11830 times:

Quoting AirlineReporter (Thread starter):
Looks like they are being painted to slow down corrosion of the bellies. Not sure if they will be painting their older 737s and still no official word if they are looking at a possible new livery

What older 737's? Their 737's are fairly recent.
That is true about the venting of fluids on the 737's. There is condensation, you know.
It makes sense to paint underneath to solve that problem. The rest of the plane is still AA.



A comment from an Ex CON: Work Hard.....Fly Standby!
User currently offlineAirlineReporter From United States of America, joined Jun 2010, 78 posts, RR: 0
Reply 9, posted (2 years 10 months 2 weeks 1 day 12 hours ago) and read 10379 times:

Quoting T5towbar (Reply 8):
What older 737's? Their 737's are fairly recent

I was using "older" as a comparison. Yes, all their 737s are relatively new, but the ones they have already taken delivery previously still do not have the painted underside -- and in fact they are older than the ones with the painted bellies.


User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9665 posts, RR: 52
Reply 10, posted (2 years 10 months 2 weeks 1 day 11 hours ago) and read 9714 times:

Quoting Byrdluvs747 (Reply 5):
this seems like a design flaw to me. Why would Boeing put a discharge port any place but at the very rear of the aircraft to prevent fluid from coming in contact with other parts of the fuselage? Is static electricity discharge a concern at that point?

Piping it back to tail would add a lot of weight. Quite a bit of fluid can be discharged in flight. Fuel, hydraulic fluid, and grey water all have drain masts. They are on the bottom of the airplane and are designed so that the fluid does not contact the fuselage. Hydraulic fluid (skydrol) will damage paint as well. Rarely does it vent overboard in flight, but sometimes there are reasons for it to. The drain mast for the hydraulic fluid is just aft of the wheel well on the left side of the airplane.



If you have never designed an airplane part before, let the real designers do the work!
User currently offlinedfwrevolution From United States of America, joined Jan 2010, 984 posts, RR: 51
Reply 11, posted (2 years 10 months 2 weeks 1 day 11 hours ago) and read 9685 times:

Beat by RoseFlyer  Wink

[Edited 2011-12-09 09:34:15]

User currently offlineD L X From United States of America, joined May 1999, 11410 posts, RR: 52
Reply 12, posted (2 years 10 months 2 weeks 1 day 11 hours ago) and read 9451 times:

Quoting wn700driver (Reply 1):
Nah, I see right through that excuse. I know what they're really doing. Over time, a little paint here, little more paint there, and next thing you know, Bam!, they have an actual paint scheme. It's livery creep, I tell you!

Over time, a little paint here, little more paint there, and next thing you know, Bam!

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Photo © Damon Marcus Lewis




I guess this photo will not be possible much longer:

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Photo © Damon Marcus Lewis




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User currently offlineCO777DAL From United States of America, joined Feb 2007, 624 posts, RR: 0
Reply 13, posted (2 years 10 months 2 weeks 1 day 9 hours ago) and read 7725 times:

Quoting AirlineReporter (Thread starter):
Answer from American:

“All 737’s have fluid discharge ports along the bottom Aft fuselage. AA has decided to paint the underbelly of the aircraft for aesthetic purposes and to prevent any contact of these fluids with the bare aluminum skin.”

Looks like they are being painted to slow down corrosion of the bellies. Not sure if they will be painting their older 737s and still no official word if they are looking at a possible new livery.

Yet, CO purposely leave their bellies bare, and they fly a lot more 737s. Like I said on the other thread something isn't right, if AA and CO are doing the exact opposite.



Worked Hard. Flew Right. Farewell, Continental. Thanks for the memories.
User currently offlinegdg9 From United States of America, joined Jun 2005, 655 posts, RR: 0
Reply 14, posted (2 years 10 months 2 weeks 1 day 9 hours ago) and read 7495 times:

Quoting 5MillionMiler (Reply 7):
Stains impact liveries... Qantas had to paint all RR engines grey because the oil seapage made the white nacelles look filthy

So how do Air France aircraft get more seapage than any other carrier?      


User currently offlinequalitydr From United States of America, joined Sep 2007, 117 posts, RR: 0
Reply 15, posted (2 years 10 months 2 weeks 1 day 6 hours ago) and read 4387 times:

Quoting gdg9 (Reply 14):
So how do Air France aircraft get more seapage than any other carrier?

You ever had their Clams Provençal?    That'll put a load on the ol' lav...



All you need in this life is ignorance and confidence; then success is sure. -- Mark Twain
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