What was found
F12 BUCKLED UNDER FLOOR. F12 UNDERFLOOR T ANGLE CENTER CAP - REMOVED DAMAGED T ANGLE. FABRICATED NEW T ANGLE FROM 2024T3 .085" X 1 5/8" X 1" TO SAME SIZE, DESIGN, AND HOLE PATTERN AS PREVIOUSLY INSTALLED. FABRICATED REPAIR DOUBLER 4 1/2"X 39 1/2" ALL NEW PARTS ACID ETCHED, ALODINED, AND PRIMED WITH 511K011 EPOXY PRIMER. INSTALLED T ANGLE AND DOUBLER USING MS20470AD RIVETS. MATERIALS USED; FASTENER TYPE, SIZE, SPACING, AND REPAIR CRITERIA WERE OBTAINED FROM ORIGINAL INSTALLATION, CASA 212-200 SRM SECTION 4 FIG 4.12, 4.17, APPENDIX II FIG. B19, B22 ILL, AND AC43.13-1 B 4-57B(P4-16), 4-57E(P4-19), SECTION 4-60B (P4-40).