deaphen
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Paint Peeling Off The Tail Of An A/c?

Fri Mar 21, 2008 1:49 pm

Hey guys

Here is a shameless self plug, but i need some questions answered.

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Photo © Nitin Sarin



If you notice the tail on the A319, you can clearly see that the part which comes directly in contact with the wind while flying is a smeared blue colour, same as the "chakra" of the old IC livery.

Now my question is, why does this happen? Is it mainly due to wearing of the paint because of the friction the tail faces during flight?

Is it because the bottom layer of the tail is painted blue? That doesnt make sense to me , because why would they base paint the tail blue and then paint the red/orange on top of it?

I have noticed this happen on lots of birds in India, does the heat have something to do with it?

Again, thanks for the answers in advance
Nitin
I want every single airport and airplane in India to be on A.net!
 
flytuitravel
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RE: Paint Peeling Off The Tail Of An A/c?

Fri Mar 21, 2008 2:03 pm

I think it depends on the quality of paint or how thick of a layer you put on....maybe someones else can give a more detailed explanation.
 
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breiz
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Joined: Tue Mar 29, 2005 9:12 pm

RE: Paint Peeling Off The Tail Of An A/c?

Fri Mar 21, 2008 6:33 pm



Quoting Deaphen (Thread starter):
If you notice the tail on the A319, you can clearly see that the part which comes directly in contact with the wind while flying is a smeared blue colour, same as the "chakra" of the old IC livery.

Now my question is, why does this happen? Is it mainly due to wearing of the paint because of the friction the tail faces during flight?

Is it because the bottom layer of the tail is painted blue? That doesnt make sense to me , because why would they base paint the tail blue and then paint the red/orange on top of it?

I have noticed this happen on lots of birds in India, does the heat have something to do with it?

Your questions would be better answered by somebody working in the business of decorating ac.
I can anyway risk a few hints:
- The deterioration of the paint on the leading edge of the fin is usually due the abrasive elements in the air, sand and hail, not the mere friction of the air. The quality of the paint matters of course.
- Very often the livery is made of paint and stickers. A base paint is applied and stickers are affixed to make titles, logo,...
Un-perfectly set stickers, or bad quality stickers, often peel off.
- India is not the only country where you find such problems.
 
roseflyer
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RE: Paint Peeling Off The Tail Of An A/c?

Fri Mar 21, 2008 7:05 pm

The air pollution, sand, and dust in India affects how long the paint lasts. It is not necessarily the heat. All the compounds in the air will cause the paint to deteriorate.
If you have never designed an airplane part before, let the real designers do the work!
 
EMBQA
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Joined: Sat Oct 25, 2003 3:52 am

RE: Paint Peeling Off The Tail Of An A/c?

Fri Mar 21, 2008 8:00 pm



Quoting Deaphen (Thread starter):
Is it mainly due to wearing of the paint because of the friction the tail faces during flight?

You answered your own question..........
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
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HAWK21M
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RE: Paint Peeling Off The Tail Of An A/c?

Sat Mar 22, 2008 8:48 am

Relative Wind,Also if the Paint job is not done in a controlled Atmosphere,the Adhering will not be as good & can peel off.
Skydrol leaks are a source of many paint peeling issue,although in this case it is not.

regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
spencer
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RE: Paint Peeling Off The Tail Of An A/c?

Sat Mar 22, 2008 10:15 am



Quoting HAWK21M (Reply 5):
Skydrol leaks are a source of many paint peeling issue

This is very true, although many paint manufacturers now supply Skydrol Resistant Finish materials. Paint flaking is down to general wear and tear basically.
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
 
B6JFKH81
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RE: Paint Peeling Off The Tail Of An A/c?

Sat Mar 22, 2008 3:33 pm

One thing that B6 does to help prevent this is applying the mylar tape along the leading edges of the fin and winglets. There is mx required on that as well since the tape will peel from time to time, but it is easier to replace a section of tape than to touch-up the pain paint.
"If you do not learn from history, you are doomed to repeat it"
 
ex52tech
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RE: Paint Peeling Off The Tail Of An A/c?

Sat Mar 22, 2008 3:48 pm



Quoting Deaphen (Thread starter):

Is it because the bottom layer of the tail is painted blue? That doesnt make sense to me , because why would they base paint the tail blue and then paint the red/orange on top of it?

That is exactly how it is done, you paint the tail blue, then put a stencil, or design cut-out, over the the part you want to remain blue, and then apply the top color, remove the stencil after the orange drys. Most airlines leave the leading edges unpainted due to erosion.

Quoting HAWK21M (Reply 5):
Also if the Paint job is not done in a controlled Atmosphere,the Adhering will not be as good & can peel off.

That is a factor, and the preparation of the surface to paint, back in the days before the environment was on the front burner, we would paint airplanes right in the heavy check hangar, all the dust, or improper cleaning of the fuselage could cause some serious pealing of the paint.
"Saddest thing I ever witnessed....an airplane being scrapped"
 
474218
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RE: Paint Peeling Off The Tail Of An A/c?

Sat Mar 22, 2008 3:56 pm



Quoting Ex52tech (Reply 8):
............... back in the days before the environment was on the front burner, we would paint airplanes right in the heavy check hangar...................

I know airlines and overhaul facilities that still do.

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