Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Paintwork On AA Aircraft  
User currently offlineHantsflyer27 From United Kingdom, joined Oct 2005, 65 posts, RR: 0
Posted (8 years 10 months 3 weeks 5 days 3 hours ago) and read 3038 times:

Can anyone answer a question for me??? What are AA airliners finished with??? Other than the strips and the logo, it just looks like polished metal. If this is the case, what stops corrosion? Is there actually a chrome effect paint they use? I thought and unfinished aircrafts body was green..once the protective painted had been applied to body.

Your thoughts on this would be appreciated. Many thanks.

Regards, HF

20 replies: All unread, jump to last
 
User currently offlineHantsflyer27 From United Kingdom, joined Oct 2005, 65 posts, RR: 0
Reply 1, posted (8 years 10 months 3 weeks 5 days 3 hours ago) and read 3038 times:

....and apologies if this has already been discussed, i tried to do a search but couldn't find anything....

regards HF


User currently offlineStarlionblue From Greenland, joined Feb 2004, 17111 posts, RR: 66
Reply 2, posted (8 years 10 months 3 weeks 5 days 2 hours ago) and read 3023 times:

Quoting Hantsflyer27 (Reply 1):
....and apologies if this has already been discussed, i tried to do a search but couldn't find anything....

Good call saying that. It's been discussed numerous times. Big grin

I believe it's a transparent coat that goes over the body panels. AA also requests the panels to be from the same batch or something. On composite parts, the planes are painted grey.

The green paint you see on unfinished aircraft protects the metal. As far as I know it's stripped before the final paint is applied.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineMrChips From Canada, joined Mar 2005, 937 posts, RR: 0
Reply 3, posted (8 years 10 months 3 weeks 4 days 22 hours ago) and read 2954 times:

Quoting Starlionblue (Reply 2):
The green paint you see on unfinished aircraft protects the metal. As far as I know it's stripped before the final paint is applied.

The green coating is actually a plastic-like coating that comes off rather like rubber cement, if I recall correctly. Also, it is only found on Boeing aircraft, since they use clad aluminum. Airbus uses anodized aluminum for most their aircraft, so they roll out of the factory with a coat of yellow chromate primer on them.

Incidentally, it is not possible to get a bare metal finish on any Airbus model after the A320, as the anodized aluminum is not supposed to be polished.



Time...to un-pimp...ze auto!
User currently offlineMiamiair From , joined Dec 1969, posts, RR:
Reply 4, posted (8 years 10 months 3 weeks 4 days 22 hours ago) and read 2951 times:

When the original A300 came out, the skins were bare, i.e., there was no clad on them. And corrosion was a MAJOR issue.

Any metal skin may be polished, look at AF1. A clear conversion coating may be applied to inhibit corrosion.


User currently offline474218 From United States of America, joined Oct 2005, 6340 posts, RR: 9
Reply 5, posted (8 years 10 months 3 weeks 4 days 18 hours ago) and read 2897 times:

Boeing uses Alclad aluminum for the fuselage skins. Alcald is a thin layer of pure aluminum applied the aluminum alloy to provide corrosion protection. Pure aluminum dose not corrode while alloyed aluminum does. AA does nothing more than polish their fuselage skins to a high gloss. A chemical treatment called Alodine 1000 can also be applied to assist with the corrosion protection, as it is possible to polish through the Alclad coating and exposing the underlying alloy.

User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 6, posted (8 years 10 months 3 weeks 4 days 14 hours ago) and read 2859 times:

Is AA The only Airline opting for Polish rather than paint.Although a few AI B747s have the lower fuselage polished too.
regds
MEL



Think of the brighter side!
User currently offline474218 From United States of America, joined Oct 2005, 6340 posts, RR: 9
Reply 7, posted (8 years 10 months 3 weeks 4 days 13 hours ago) and read 2854 times:

Quoting HAWK21M (Reply 6):
Is AA The only Airline opting for Polish rather than paint.Although a few AI B747s have the lower fuselage polished too.
regds

Air Canada has stripped the paint from a B767 as a test and Eastern stripped their fleet (except the A300's) back in the late 1980's. Eastern B757's came from the factory polished.

I remember when Lockheed was still building L-1011's we actually polished some of the Alclad off the belly skins of a Delta plane, because they wanted them to shine.


User currently offlineNewark777 From United States of America, joined Dec 2004, 9348 posts, RR: 29
Reply 8, posted (8 years 10 months 3 weeks 4 days 13 hours ago) and read 2847 times:

Quoting HAWK21M (Reply 6):
Is AA The only Airline opting for Polish rather than paint.Although a few AI B747s have the lower fuselage polished too.
regds
MEL

DL's lower fuselage is also polished.


View Large View Medium
Click here for bigger photo!

Photo © Justin Idle



And many cargo carriers have polished planes.


View Large View Medium
Click here for bigger photo!

Photo © Satoshi Yamagishi



Harry



Why grab a Heine when you can grab a Busch?
User currently offlineHa763 From United States of America, joined Jan 2003, 3666 posts, RR: 5
Reply 9, posted (8 years 10 months 3 weeks 4 days 8 hours ago) and read 2812 times:
Support Airliners.net - become a First Class Member!

Aeromexico is another one with bare metal


View Large View Medium
Click here for bigger photo!

Photo © Ricardo Morales Aviation Photography of Mexico



HA's ex-AA DC-10s also were bare metal


View Large View Medium
Click here for bigger photo!

Photo © Paul Spijkers



User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 10, posted (8 years 10 months 3 weeks 4 days 4 hours ago) and read 2793 times:

Amazing.Thanks for the pics.Out here We rarely get to see those polished Aircraft.What would be the frequency of polishing.
regds
MEL



Think of the brighter side!
User currently offlineAvioniker From United States of America, joined Dec 2001, 1109 posts, RR: 11
Reply 11, posted (8 years 10 months 3 weeks 3 days 20 hours ago) and read 2749 times:

Polishing is done with pneumatic rollers at C check. Takes about a day for a 737 or MD


One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533
User currently offlineAAR90 From United States of America, joined Jan 2000, 3481 posts, RR: 46
Reply 12, posted (8 years 10 months 3 weeks 3 days 11 hours ago) and read 2697 times:

Quoting Hantsflyer27 (Thread starter):
What are AA airliners finished with??? Other than the strips and the logo, it just looks like polished metal.

Correct. Matched polished metal.

Quote:
If this is the case, what stops corrosion?

Washing & polishing is all AA does.

Quote:
Is there actually a chrome effect paint they use?

Nope. Just polish the bare metal.

Quoting Avioniker (Reply 11):
Polishing is done with pneumatic rollers at C check. Takes about a day for a 737 or MD

Or less.  Wink



*NO CARRIER* -- A Naval Aviator's worst nightmare!
User currently offlineEksath From United States of America, joined Aug 2004, 1317 posts, RR: 25
Reply 13, posted (8 years 10 months 3 weeks 3 days 10 hours ago) and read 2690 times:
AIRLINERS.NET CREW
ARTICLE EDITOR

Quoting AAR90 (Reply 12):
Just polish the bare metal.

..and what a good job they do!

View Large View Medium
Click here for bigger photo!

Photo © Suresh A. Atapattu




View Large View Medium
Click here for bigger photo!

Photo © Suresh A. Atapattu




World Wide Aerospace Photography
User currently offlineKevinl1011 From United States of America, joined Mar 2005, 2964 posts, RR: 47
Reply 14, posted (8 years 10 months 3 weeks 3 days 10 hours ago) and read 2688 times:

Paint is heavy. The B29 went over original design weight and was unpainted to salvage payload capabilities.


474218, Carl, You will be missed.
User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 15, posted (8 years 10 months 3 weeks 3 days 9 hours ago) and read 2681 times:

Quoting Avioniker (Reply 11):
Polishing is done with pneumatic rollers at C check

What Polish type.
Also what would the Paint Penalty saved on say a B747.
regds
MEL



Think of the brighter side!
User currently offlineHantsflyer27 From United Kingdom, joined Oct 2005, 65 posts, RR: 0
Reply 16, posted (8 years 10 months 3 weeks 3 days 7 hours ago) and read 2674 times:

Great responses, thankyou all.

I guess having your fleet finished in a polished aluminium could benefit in two ways. Firstly, are there any weight savings not using paint??? I'm guessing that coating a large jet like a 767 or 777 could use many KG of paint. Does anyone know more on this? And secondly, i guess it would be easier to inspect the body of an aircraft for stress fractures etcs....is this a factor? Any thoughts on that would be great.

I would also think a clean and re-polish would be substantially cheaper to do than a repaint.

Once again, thanks for replies.

Regards, HF


User currently offlineAvioniker From United States of America, joined Dec 2001, 1109 posts, RR: 11
Reply 17, posted (8 years 10 months 3 weeks 1 day 3 hours ago) and read 2571 times:

Quoting HAWK21M (Reply 15):
What Polish type.
Also what would the Paint Penalty saved on say a B747.
regds
MEL

In 1992 the -200 I was involved with came out 3125 pounds heavier after paint. (DC-10's I used to work had a 2200 pound paint job so I wonder at the accuracy of the 747 weight, but that's what we got on the final weigh.)



One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533
User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 18, posted (8 years 10 months 3 weeks 1 day 2 hours ago) and read 2553 times:

Quoting Avioniker (Reply 17):
In 1992 the -200 I was involved with came out 3125 pounds heavier after paint.

Considering the savings in weight.Why so few Airlines have opted for polish.
regds
MEL



Think of the brighter side!
User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 19, posted (8 years 10 months 3 weeks 1 day ago) and read 2543 times:

Quoting HAWK21M (Reply 18):
Considering the savings in weight.Why so few Airlines have opted for polish.

The labor hours to keep it looking good.....



"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently offlineLY4XELD From United States of America, joined Mar 2000, 858 posts, RR: 15
Reply 20, posted (8 years 10 months 3 weeks 21 hours ago) and read 2511 times:

Quoting Avioniker (Reply 11):
Polishing is done with pneumatic rollers at C check. Takes about a day for a 737 or MD

I don't know what they use, but I watch them do it on the 777's and 767's here at AFW. It will take at least 2 days to complete the fuselage and then they continue to clean and polish the wings.



That's why we're here.
Top Of Page
Forum Index

Reply To This Topic Paintwork On AA Aircraft
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Aircraft Types Progression For Pilots On AA posted Wed Aug 18 2004 19:55:08 by N62NA
Thrust Vectoring On Commercial Aircraft posted Tue Aug 1 2006 16:43:08 by Texfly101
AA Aircraft CI posted Tue Feb 7 2006 15:54:03 by Delta07
Types Of Light On An Aircraft posted Mon Dec 5 2005 16:39:36 by ArcticTern
Cabin Temperature On Large Aircraft Who Controls? posted Fri Nov 18 2005 19:41:07 by Julesmusician
Changing Engine Mfr On Delivered Aircraft Poss? posted Fri Nov 18 2005 10:47:02 by BestWestern
Flapless Landings On Large Aircraft - When To Do? posted Sun Oct 30 2005 13:25:24 by Julesmusician
Mtow Difference On Same Aircraft? posted Mon Oct 10 2005 00:24:27 by Qantas744ER
? About Raising Flaps/gear On Light Aircraft posted Fri Jun 3 2005 20:41:50 by Spartan13
What Is This Green Coating On The Aircraft? posted Thu Feb 24 2005 22:41:24 by Bio15

Sponsor Message:
Printer friendly format