Longeron corrosion in tail

[KC-AP]

Any suggestions on where to find parts for a longeron replacement on a 1964 Mooney C converted to a D?  Looks like I am looking for P/N's

3451-1  left stiffener

3451-2  stiffener right

3935-7 longeron, left

3935-8  longeron, right

Thank you.

[RLCarter]

Not that it would matter…. It’s an M20-C converted to an M20-D (fixed gear)? Check with a Mooney Service Center and see if the parts are available from the factory and if not Mooney should be able to tell you what alloy was used so they can can be fabricated 

[Prior owner]

Call LASAR or another Mooney service center to get the part. It’s an easy one for the factory to make- it comes undrilled. Not a monumental project to replace one on the plane.
 

Are you sure you need both the stiffener and the longeron? Sometimes, it’s just the stiffener (the shorter piece) that is corroded.

[Fly Boomer]

On 8/5/2022 at 6:30 AM, KC-AP said:

Looks like I am looking for P/N's

And BTW, welcome to MooneySpace!

[Lionudakis]

On 8/5/2022 at 6:30 AM, KC-AP said:

Any suggestions on where to find parts for a longeron replacement on a 1964 Mooney C converted to a D?  Looks like I am looking for P/N's

3451-1  left stiffener

3451-2  stiffener right

3935-7 longeron, left

3935-8  longeron, right

Thank you.

Did you have any luck getting parts? I just found some intergranular corrosion on my longeron. 

[DCarlton]

25 minutes ago, Lionudakis said:

Did you have any luck getting parts? I just found some intergranular corrosion on my longeron. 

Mind showing folks a pic ?  Might help others look for it particularly if there are common hot spots. 

[Lionudakis]

Here’s a close up. About a 6” piece. The rest of it looks fine as does the opposite side longeron. 

[Lionudakis]

26 minutes ago, DCarlton said:

Mind showing folks a pic ?  Might help others look for it particularly if there are common hot spots. 

The extruded longerons that run from the rear bulkhead aft of cargo area to the tail, above the access panel. 

[carusoam]

Good catch!

For pre-flown parts…

@Alan Fox and others…

-a-

[Alan Fox]

6 hours ago, carusoam said:

Good catch!

For pre-flown parts…

@Alan Fox and others…

-a-

This is not a piece I would particularly save , #1 , the holes will NOT line up , #2 its a standard extrusion , Just buy a piece , and match drill it to the one you remove...

[Alan Fox]

6 hours ago, carusoam said:

Good catch!

For pre-flown parts…

@Alan Fox and others…

-a-

Anybody ever hear of a splice repaior ?  Just splice IAW 43-13...

[Jsno]

Without going out to my plane and verifying, that looks like it is just an aluminum angle extrusion that you can buy from Aircraft Spruce and splice in a piece per AC 43.13.  2024-T3

[Lionudakis]

1 hour ago, Alan Fox said:

Anybody ever hear of a splice repaior ?  Just splice IAW 43-13...

Alan, That was my plan, finding out what to splice it with was step one. The aft most part of the bad area goes into the horizontal former area and is riveted with both horizontal and vertical rivets. (just forward of the rear most bulkhead) so I’ll be peeling back a little bit of the skin, it doesn’t look to bad to do though