The cracked Flap Hinge Rib is finally getting repaired
Today I started removing the cracked rib on the left wing at the center flap hinge.
Today I continued to work on the cracked flap hinge butt rib on the Left wing. I removed the “Edge Assy” 108-1111045-0 which then allowed me to get into where the butt rib is.
Removing this was a PITA. The PK screws were rusted in requiring me to use penetrating oil to loosen them up. Then I had to purchase a LONG 1/8” drill bit bc there are about 5 rivets right beside the hinges which makes it hard to get your drill in there.
The cracked rib is at Station 46 as measured from the root.
There are about 30+ rivets holding this butt rib. The rib is not only riveted to the Spar, but also to the main rib with doublers.
Today while working on the cracked butt rib, I noticed something about the hardware that holds the flaps on the hinges.
Each hinge has a “bearing/bushing” where the bolt goes through the Hinge. This bushing protrudes outside and wider than the hinge it self. There is a Felt Washer that goes over the bushing.
P/N 108-8001001 Felt Seal (2 required per hanger)\
Example of what this felt washer looks like new, thanks to https://n9391k.wordpress.com
OK, in my last post we cover the new damage I found on the left wing at the center flap hangar. This video documents what I need to remove to get to the rib I need to replace.
Ok, so I was pulling aileron cables out of the left wing today, and found a new surprise!
Today I documented and removed the Aileron and Flap cables including the hinges.
I made a video so I could remember the routing later and took a lot of still photos.
I will have to get the parts cleaner, sand blaster and paint booth ready so I can start getting these pieces ready for inspection and reinstallation.