Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Excess Paint  
User currently offlineEirbus06 From Ireland, joined Apr 2006, 253 posts, RR: 0
Posted (6 years 7 months 3 weeks 6 days 4 hours ago) and read 2049 times:

Just saw the below photo of the United 747 and it seems under the fresh(ish) paint job,the old gray livery seems to be peeking through!

Question 1: How often doe's this happen?

Question 2: Why would any airline carry 2 coats (or however many coats) of paint when most airlines nowadays are trying to shed weight?



View Large View Medium
Click here for bigger photo!

Photo © George Canciani



12 replies: All unread, jump to last
 
User currently offlineMiamiair From , joined Dec 1969, posts, RR:
Reply 1, posted (6 years 7 months 3 weeks 6 days 4 hours ago) and read 2049 times:



Quoting Eirbus06 (Thread starter):
How often doe's this happen?

Very, in the leased world anyways.

Quoting Eirbus06 (Thread starter):
Question 2: Why would any airline carry 2 coats (or however many coats) of paint when most airlines nowadays are trying to shed weight?

$$$, it is called "Scuff and Squirt." It is more economical to sand the existing paint, prime and top-coat than it is to mask, strip, prepare, prime and paint. Sometimes you get a door that you start sanding to get to rivet heads and you run across several liveries.


User currently offlineSfomb67 From United States of America, joined Dec 2005, 417 posts, RR: 0
Reply 2, posted (6 years 7 months 3 weeks 5 days 17 hours ago) and read 1893 times:

Where do you see the gray peeking thru ? I really can't see it. Also, a lot of the surfaces, especially on the tail, are composite and have to be sanded, not stripped. Since most, if not all, paint jobs are done by outside vendors, they are probably just scuffed. After all, they're in business to make $$$$$.


Not as easy as originally perceived
User currently offlineEirbus06 From Ireland, joined Apr 2006, 253 posts, RR: 0
Reply 3, posted (6 years 7 months 3 weeks 5 days 4 hours ago) and read 1811 times:



Quoting Sfomb67 (Reply 2):
Where do you see the gray peeking thru ? I really can't see it.

Above the "E" in the united titles,Up and left of the right-hand winglet.  Smile

Quoting Miamiair (Reply 1):
$$$, it is called "Scuff and Squirt." It is more economical to sand the existing paint, prime and top-coat than it is to mask, strip, prepare, prime and paint. Sometimes you get a door that you start sanding to get to rivet heads and you run across several liveries



Quoting Sfomb67 (Reply 2):
Also, a lot of the surfaces, especially on the tail, are composite and have to be sanded, not stripped. Since most, if not all, paint jobs are done by outside vendors, they are probably just scuffed.

Thanx for the quick replies.


User currently offlineMiamiair From , joined Dec 1969, posts, RR:
Reply 4, posted (6 years 7 months 3 weeks 5 days 3 hours ago) and read 1790 times:



Quoting Sfomb67 (Reply 2):
Since most, if not all, paint jobs are done by outside vendors, they are probably just scuffed. After all, they're in business to make $$$$$.

And the outside vendors have their "Oh Shit" moments and poke their man-lifts thru the stams or fairings, cause $$$ in damage too...


User currently offlineSfomb67 From United States of America, joined Dec 2005, 417 posts, RR: 0
Reply 5, posted (6 years 7 months 3 weeks 4 days 17 hours ago) and read 1717 times:

After blowing the picture way up, I see where paint is peeling off all over! Doesn't say much for the paint job. But, you get what you pay for.


Not as easy as originally perceived
User currently offlineSpencer From United Kingdom, joined Apr 2004, 1635 posts, RR: 17
Reply 6, posted (6 years 7 months 3 weeks 3 days 1 hour ago) and read 1610 times:

A scuff pad, in most cases, is just as effective as a sanding disc. The major cause of peeling paintwork is a poorly prepared surface, where dirt or grease hasn't been cleared prior to paint. That combined with, say, a highpoint such as a rivet or join, (whereby it's more prone to wear and tear), would be a prime example of where to look for damaged paintwork.
Spencer.



EOS1D4, 7D, 30D, 100-400/4.5-5.6 L IS USM, 70-200/2.8 L IS2 USM, 17-40 f4 L USM, 24-105 f4 L IS USM, 85 f1.8 USM
User currently offlineKELPkid From United States of America, joined Nov 2005, 6428 posts, RR: 3
Reply 7, posted (6 years 7 months 3 weeks 3 days ago) and read 1600 times:

Is the rudder handled any differently? I know that re-painting the rudder=automatic rebalance...would you want to strip it down to the bare metal?


Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineSpencer From United Kingdom, joined Apr 2004, 1635 posts, RR: 17
Reply 8, posted (6 years 7 months 3 weeks 2 days 13 hours ago) and read 1554 times:

A total strip is normally only done with a D-check. And yes, generally a rudder rebalance is due after paint.
Spencer.



EOS1D4, 7D, 30D, 100-400/4.5-5.6 L IS USM, 70-200/2.8 L IS2 USM, 17-40 f4 L USM, 24-105 f4 L IS USM, 85 f1.8 USM
User currently offlineMiamiair From , joined Dec 1969, posts, RR:
Reply 9, posted (6 years 7 months 3 weeks 2 days 10 hours ago) and read 1537 times:

Quoting KELPkid (Reply 7):
Is the rudder handled any differently? I know that re-painting the rudder=automatic rebalance...would you want to strip it down to the bare metal?

In most cases if you strip and re-paint a control surface or tab, you have to re-balance it; as with the addition of any repairs. So it comes down, has a trial weight and balance, paint, balance and install. In some cases the balancing may be done by calculation so you don't have to remove it, but there is a lot of variation in the data.

Some surfaces are composite, so ixnay on the stripping unless you want to buy another rudder. The paint on composite surfaces is blasted away using different media such as baking soda and/or dry ice. Sanding down the paint is not a preferred method either as going too deep will damage the fiber plies.

[Edited 2008-05-02 03:55:27]

User currently offlineTWAL1011727 From United States of America, joined Mar 2006, 637 posts, RR: 0
Reply 10, posted (6 years 7 months 2 weeks 4 days 20 hours ago) and read 1428 times:



Quoting Sfomb67 (Reply 5):
Doesn't say much for the paint job. But, you get what you pay for.

IIRC a Delta Mechanic told me that the EPA (or some other Gov't agency)
mandated a less environmentally harmful type of paint.
This paint does not last nearly as long as previous paints.

KD


User currently offline474218 From United States of America, joined Oct 2005, 6340 posts, RR: 9
Reply 11, posted (6 years 7 months 2 weeks 4 days 18 hours ago) and read 1407 times:

You want an example of excess paint? The following photo was taken in 1990 at Piarco International Airport when BWIA was changing their livery. They painted their aircraft in the hanger during a C-Check, painting was done on night shift. They never stripped the fuselage just scuff and re-paint.

Big version: Width: 1162 Height: 791 File size: 355kb


User currently offlineMiamiair From , joined Dec 1969, posts, RR:
Reply 12, posted (6 years 7 months 2 weeks 4 days 9 hours ago) and read 1373 times:



Quoting TWAL1011727 (Reply 10):
IIRC a Delta Mechanic told me that the EPA (or some other Gov't agency)
mandated a less environmentally harmful type of paint.

Paint is hazardous because of the pigments and solids. The paint you are referring to is called the "High Solids." It is not less harfull.


Top Of Page
Forum Index

Reply To This Topic Excess Paint
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...
Paint Peeling Off The Tail Of An A/c? posted Fri Mar 21 2008 06:49:42 by Deaphen
How Do Airlines Paint Rented Planes? posted Wed Jan 9 2008 17:19:50 by NWA320
Silverjet "silver Plating" Paint posted Fri Dec 14 2007 11:08:13 by FLY777UAL
Airplane Paint Scheme Question posted Thu Jul 26 2007 05:05:04 by Cancidas
LCF Paint? posted Fri Apr 20 2007 17:07:57 by Flipdewaf
What Kind Of Paint Is Used For A/C? posted Sat Feb 3 2007 02:07:01 by Brenintw
How Long And How Much Does It Take To Paint A Plan posted Thu Jan 25 2007 06:12:38 by FL370
Boeing Paint Hangers posted Mon Oct 9 2006 22:40:55 by KBFIspotter
Odd Paint On 727 Cockpit Window Frame - Why? posted Wed May 17 2006 04:24:27 by September11
Paint Effect On Parasite Drag? posted Fri Nov 18 2005 20:42:03 by Lehpron
Airplane Paint Scheme Question posted Thu Jul 26 2007 05:05:04 by Cancidas
LCF Paint? posted Fri Apr 20 2007 17:07:57 by Flipdewaf
What Kind Of Paint Is Used For A/C? posted Sat Feb 3 2007 02:07:01 by Brenintw
How Long And How Much Does It Take To Paint A Plan posted Thu Jan 25 2007 06:12:38 by FL370
Boeing Paint Hangers posted Mon Oct 9 2006 22:40:55 by KBFIspotter
Odd Paint On 727 Cockpit Window Frame - Why? posted Wed May 17 2006 04:24:27 by September11

Sponsor Message:
Printer friendly format