Brief Description: Seat back safety and flap alignment fix
I know these seat back clips don’t look like much, but there are 6.5 hours in building these from sheet metal for both seats including priming and riveting to the seat back. It is not hard, but there is a lot of layout work, and then drilling the 6 pieces to the seatback bulkhead and riveting the assembly in place.
I also needed to fix the flap motor location. Although I built the flap jackscrew channel exactly per plan, the weldment for the flap did not line up. This is a problem that I have seen a couple of times on the VAF and Matronics list. The tolerances for the flap actuator weldment are not close enough or there is a mistake in the drawings ending up with the miss-alignment. The solution was making a new angle and reversing the angle leg to add more space and then making up a set of spacers to locate the jackscrew in proper alignment. I didn’t take the before picture, but as you can see there are 6 rivets instead of three. I did this because I drilled out the original angle rivets and needed using the same location put the rivets close to the upright leg. Well, at least it is not going to come apart, even though it may be overkill. I need to order an AN4-23 bolt to make it all work, the -22 I had is a little short and this bolt gets a cotter pin through the nut as a safety.
Seat back
Flap after reversing angle mount and adding spacers
