Lining up

Here I'm lining up the second (left) elevator trim control horn (near side) per SB 110520Reb (4/18/95). I decided that the trim control rod holes should be drilled through first, so I used cleco clamps and drilled those first. At this point, the new piece

Ready to drill

Here I'm getting ready to back drill the trim control rod holes, which are a little dark to see, just above the left cleco clamp. The holes are 1/8" dia. Fire up the generator, fire up the compressor, oil the Sioux drill, and...

Attachment holes

Here the trim control rod holes and the two holes for rivets to connect the new piece of the horn to the old have been drilled, as has the forward-most of two rivet holes that will mount the new horn to the elevator tab underneath. I always had two clecos

Elev trim horn priming

Applying self-etching primer to the mating surfaces. At this point, all holes have been de-burred, and the new piece has been sanded and filed to match the original single piece.

Trim horn finished

Doesn't look too bad when it's done. It's certainly more robust that the single control horn bracket, that was attached to the elevator by a mere two rivets. Now there are four rivets, and flanges supporting the horn on each side. Mo' bettah!

Trim horn finished with sunshine

Looks even better from this side where we get a little natural sunshine on the job. :-)

Elev rib mod layout

This shows the essential layout of the elevator tip rib reinforcement mod piece. Line A-B-C is at right angles to the bottom edge. Line A-F-G is 3.5" from the bottom edge. The top is 4.5" from the bottom edge. A-D is 11/16". B-E is 13/16&qu

Elev rib mod layout #2

This shows the essential layout of the elevator tip rib reinforcement mod piece. Line A-B-C is at right angles to the bottom edge. Line A-F-G is 3.5" from the bottom edge. The top is 4.5" from the bottom edge. A-D is 11/16". B-E is 13/16&qu

Bending the elev tip mod

The might Little Mule brake at work, bending the sides of the tip reinforcement.