Brief Description: Dimple and Countersink Cabin Top Flanges
1542 - 1730
Debur all holes in fuselage side skins common to cabin top.
Dimple these holes for flush rivets using hand squeezer.
Debur holes in forward top tailcone skin.
Dimlpe these holes using DRDT for flush rivets.
Fabricate a countersink cage shim to facilitate countersinking cabin top flange. Shim was fabricated from 063 scap and attached to cage with carpet tape.