8th
October
2009
Firewall drilling
Hours: 3.1 | Posted in BulkheadsDrilled the holes to size on all the firewall parts, then disassembled for deburring and countersinking. Fabricated a new fuel pump doubler plate when I accidentally countersunk the wrong side of the platenut attach holes — the flush heads go on the aft side of the firewall, opposite the rest of the rivets on this piece. (This is so the fuel pump can sit flat against the aft face of the plate.) Deburred/countersunk all edges and holes of the smaller pieces, leaving just the firewall and recess to deal with. Deburring the stainless looks like a chore.
