Completed the SB on my 12 today. I drilled off the two Cover Plates to get a good look at the hardware after 168 hours, and a lot of landings, all on hard surface.
As found, one of the U-1202 brackets did have a small rivet interference and gaps on each side did not look quite equal. The other U-1202 bracket looked square. There were a lot of threads showing beyond the nuts on the AN6-24A bolts. I believe these nuts were bottomed out on the bolts, but some clamping was taking place because there was an imprint of the washer in the powder coating on the bracket.
After taking off the nuts on the outboard AN5 bolts I found no cracks in the C-channel but it was apparent that the washers do not bear the full 360°, as was noted in previous posts:
I corrected the rivet interference by slightly grinding the U-1202 per the SB. I used the even torquing sequence and verified the U1202s were holding the gear leg evenly. I added an additional washer on each of the AN6-24A bolts per the SB.
One thing that I would like to see is a change from rivets to nutplates and screws holding on the F-1275G left and right Cover Plates. This might be something we could do individually, post AW inspection.
Tony