Service Letter 00068

Tony_T · #1 01-30-2023, 10:41 AM

This hinge shim mod is a welcome upgrade. Re-installing the stabilator using washer spacers, which always get knocked off, is very frustrating. The service letter illustrations and instructions pertain primarily to the iS with a note that the RV-12 hardware is different. It is quite different, in fact. On th iS stab the outboard hinge brackets can't be easily removed and replaced. On the RV-12 stabilator the complete hinge bracket assemblies can be removed and the shims installed on the bench.

I don't have the parts yet, just thinking it through.

My stabilator so the picture pertains to the classic RV-12 not the RV-12iS:

DHeal · #2 01-30-2023, 01:10 PM

Tony -- Your photos will no doubt prove very helpful! Please let us know how your SB compliance process goes. -- David

gossend · #3 01-30-2023, 01:12 PM

Hmmm, my 2012 stab doesnt have those rivets at all! Was that added later??

DHeal · #4 01-30-2023, 01:16 PM

Dick -- Check out SB 18-02-12.

https://www.vansaircraft.com/wp-cont...sb18-02-02.pdf

hamblin10 · #5 01-31-2023, 01:04 PM

After ordering the service letter I kind of wish they would just publish the part drawing for the spacer to make ourselves. Im at a work stoppage until I can incorporate the spacer.

tg2@baymoon.com · #6 03-10-2023, 11:24 PM

Does anyone have that pneumatic squeezer in Figure 5? I would sure like to borrow one and avoid spending $500.

N8DAV8R · #7 03-11-2023, 08:15 AM

Quote:

Originally Posted by tg2@baymoon.com

Does anyone have that pneumatic squeezer in Figure 5? I would sure like to borrow one and avoid spending $500.

I'm in Tracy. I have the no-hole yoke and the Numatx squeezer. my Numatx is a whole assembly with a base and foot pedal and not something I would ship but if saving $500 was worth bringing your stab to KTCY I can help.

Bob Y · #8 03-11-2023, 11:32 AM

A number of guys have epoxied theirs in place, which is my plan during my upcoming CI. No rivets to drill out or paint to touch up.

Tony_T · #9 03-11-2023, 07:12 PM

Quote:

Originally Posted by Bob Y

A number of guys have epoxied theirs in place, which is my plan during my upcoming CI. No rivets to drill out or paint to touch up.

The downside to epoxy would be that it would be very difficult to replace the 1/4-28 plate nut in the unlikely case where that would become necessary. That assumes using the service letter shims. If I were considering epoxy I would just use washers, to allow access to the plate nut rivets.

seagull · #10 03-11-2023, 07:40 PM

Quote:

Originally Posted by Tony_T

The downside to epoxy would be that it would be very difficult to replace the 1/4-28 plate nut in the unlikely case where that would become necessary. That assumes using the service letter shims. If I were considering epoxy I would just use washers, to allow access to the plate nut rivets.

De-bonding epoxy in a place like this is a non-issue, a few seconds with a hot soldering iron on the washer and it will come apart. Regular epoxy will release at about 200f and JB Weld at 400f. Soldering iron tips are around 650f so once the heat transfers from the washer through the glue line to the base metal it releases.