Learjet 25 Wing Removal 2

[chippy1]

Hi all

Have been assigned to remove wings of a Learjet 25 for transport to an aero college, could anyone let me know what the job intales, an angle grinder is allowed but would rather not if I don't have to, also where I might find any relevant technical data sheets, SRM, AMM, etc

thanks in advance

Chip

 

[berkshire]

You could try googling for the maintenance manual
I got this on my first hit.

http://www.eflightmanuals.com/detail/itemList.asp?cID=3304

B.E.

 

[rb1957]

i'm pretty sre the Lear wing is built into the fuselage, not attached by just a few conections. that said, the thing is put together ... how much disassembly (= time) vs being a bit free with a grinder ?? maybe cut the wings off, but 1st put on witness marks so you can align things properly again after transport. maybe cut in a place where it's easy to add an external doubler, joiing both sides of the cut ? maybe (just maybe) a bunch of internal doublers, which would look neater.

if it's goin to a school, maybe they'd do the reassembly as a project ??

 

[thruthefence]

I think there is a 12 year, 12,000 hour "de mate" inspection on these aircraft. It's a big deal, and puts alot of these loud bastards in the boneyard.

For some reason I have the idea that the wings are installed with a bunch of Tension bolts & "bathtub" fittings.

 

[KENAT]

thruthefence is I believe correct about the 12,000 hour wing 'demate'. If you google it several relevant results mentioning it come up.

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

[WKTaylor]

Contact Bombardier-Lear service engineering, explain what You are doing and ask for advice. Emphasize, this jet will NOT fly again, and that a it will be used for maintenance training... so minimal disassy/transprot damage would be appreciated.

I assume they have dealt with disassy/transport of crash damaged aircraft, so this shoul NOT be a big deal.

http://businessaircraft.bombardier.com/en/3_0/3_2/3_2_8/3_2_8.jsp?id=3

Regards, Wil Taylor

 

[rerig]

IPC for Lear 24 shows the wing bolted to the fuselage.
I doubt if it is that simple, but who knows.

 

[thruthefence]

Looks like the wing attach bolts are loaded in shear-

Senior moment, I suppose.....thinking about a falcon 10, maybe.

 

[chippy1]

Thanks a million all for the information,very helpful, will let you know how I get on!!

Chip

 

[kontiki99]

Maybe you should try one of the aircraft maintenance forums or hook up with an A&P that has experience with Lears. It may save you a personal injury. There are definitely right and wrong ways to do anything.

 

[photoengineer]

Wings are challenging parts to get on the aircraft when it is being built. They would also be challenging to get off in a manner that keeps the aircraft an aircraft! Good luck with your challenge.

Cedar Bluff Engineering

http://cedarbluffengineering.webs.com