Brief Description: Fuel Tank Final Preparations (RH)
Clamped the T-411 cover plate on the rib with the flat forward edge aligned with the stiffener bead (at .453"), and aligned to the top and bottom rib flanges (.360"). Drilled all of the screw holes using T-411 cover plate as guide. Installed T-407 stiffener ring and match-drilled all platenut holes on rib using ring as guide. Disassembled all parts and deburred all holes and edges. Dimpled cover plate holes in rib and countersunk holes in T-407 stiffener ring to accept dimples in rib.
Scuffed all mating surfaces for better ProSeal adhesion.
Match-drilled holes on rib using T-411 cover plate as guide
MAtch-drilling platenut attach holes using T-407 stiffener ring as guide