Starting the process of drilling out the AN426 flush head rivets holding the skins to the inner horizontal stabilizer ribs.
Closer inspection of the affected area. Inspection shows rivet gun and pneumatic drill tool marks. This picture shows a problem area that a stress crack would probably form. The rough corner needs to have an acceptable radius replace the ragged edge.
Removed the elevators from the horizontal stabilizer to start the Service Bulletin (SB14-01-31) to correct a horizontal front spar cracking issue.
Drilled out the blind rivets holding F-742-L & R Aft Seat Floor to the seat floor ribs. Also drilled out the blind rivets holding F-747-L & R Baggage Floor panels to the baggage compartment ribs. I found screws and un-bucked flush head rivets beneath the removed panels.
I drilled out the rivets holding W-414C-L Angle to W-414A-L Plate & W-413B-R Plate.
Pre-Buy Inspection of RV-7A in Valencia, CA industrial park. I had two friends help me check out the 2011 originally purchased RV-7A Tip-Up kit. Both friends had completed RV-8s from quick-build kits.
Part W-414-L Aileron Hinge Bracket Assembly (installed by previous builder) was install canted inboard causing potential interference with the port aileron. The rivets were drilled out and a new W-414C-L angle was fabricated from AA6-125X1x1 stock. The other components of the W-414-L assembly were salvaged and re-used. Rivet holes were matched drilled from W-712-R Outer Rib and W-414A-L Plate and W-413B-R Plate. Vans calls out the mating surfaces to be primed. I use process of Alumiprep 33, Alodine, and AKZO primer.
The rivets attaching the aileron attachment point to the rear spar needed to drilled out a new part fabricated and match drilled.