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Re-Cap Tires

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SD737(at)aol.com
Guest

Posted: Thu Apr 06, 2006 8:05 pm Post subject: Re-Cap Tires

Here is a short article from a Flight Safety Briefing Sheet that my airline  

puts out to the pilots when we get a Jeppesen revision.  I thought the  L-29 

group might find interesting....

I know there was some discussion recently about recapped tires.

 

Topic: TIRE FAILURES

Recently, a tire failure caused an abort of one of our 747-400's.  It  turns 

out that many of our tire failures are attributed to foreign  object damage.  

Retreads are often mistakenly thought to be the  cause of the tire failures.  

The fact is, most of the tires on our  airplanes are retreads.  However, the 

process of retreading an airplane  tire is very different from the process of 

retreading an automobile or  truck tire.  There is no structural difference 

between a  retreaded airplane tire and a new airplane tire.  the retread for  an 

airplane tire is a solid piece that goes over the  carcass of the old tire.  

The retread of an automobile or truck tire is  simply wrapped around the old 

tire and the ends of the retread are then glued  together.  A retreaded airplane 

tire is actually more  reliable than a brand new airplane tire because the 

brand new tire is  not "broken in" yet (i.e., heated, and expanded, then cooled 

and  retracted).  Proper tire pressure is another important factor regarding  

tire failures.  An under-inflated (low pressure) tire is more  susceptible to 

failure than a properly inflated tire.  It is very important  to check tire 

pressures per SOP's.  (Standard Operating  Procedures) 

 

The airline actually has permanent tire pressure gauges on the valve  stems 

that can be read during preflight.

 

Scott Douglass

Reno, NV

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Bcolombo(at)twcny.rr.com
Guest

Posted: Thu Apr 06, 2006 8:57 pm Post subject: Re-Cap Tires

Scott good info. This was a topic at the CJAA convention we just had. We had 

a Goodyear rep in that gave us a presentation on the subject and showed 

slides of the proceeds of building tires and retreading tires. He stated the 

same thing about retreads, better than new and most tires in the commercial 

aircraft fleet are retreads. It is really a high tech, interesting process 

both building and retreading.  One thing I learned was that the sidewalls 

have no effect on the tire strength, my mains are weather checked and he 

said that makes no difference whatsoever. The rubber on the sidewalls is 

just to stop FOD from getting into the nylon that makes up the sidewall, he 

said as long as it is not cracked through to where you can see they nylon 

then structurally there is nothing to worry about. We did ask them if they 

could retread any tires, i.e. our warbird tires, and they said they did not 

have the right equipment to do sizes they do not already make. There is 

always Wilkerson I guess.

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Colyergreg(at)aol.com
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Posted: Fri Apr 07, 2006 6:10 am Post subject: Re-Cap Tires

Brian,

   how was that convention?  I am sorry I missed it.  Are you going to the 

Wendover Jet Blast?  I can't wait for it..should be a great time

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Bcolombo(at)twcny.rr.com
Guest

Posted: Fri Apr 07, 2006 6:56 am Post subject: Re-Cap Tires

Greg, the convention was a good time. We had a lot of good speakers and the 

tours were wild. I will be at Wendover. It is shaping up to be a big event. 

the f-104 will be the highlight I am sure. 6 of us are flying in commercial 

from NY.  I am hosting the northeast jet blast June 9-11 at KRME in upstate 

NY.  I sent the Griffiss jet blast info and reg. out a few days ago to all 

CJAA members so you should see it in the mail any day now.  Looks like we 

should have a few great jet blasts this year.



Brian Colombo

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