What was found
- F15 WEB SAGGING UNDERFLOOR - REMOVED FRAME15 TOP CAP AND FABRICATED A NEW CAP FROM 2024 T351 ALUMINUM "T" ANGLE, 0.084 THICK, 38.5 INCHES LONG. STRAIGHTENED OUT THE WEB ON FRAME 15. FABRICATED A DOUBLER FROM 2024 T3, 0.032" THICK MEASURING 38.5" LONG X 3 1/4" TALL WITH A 1/4" FLANGE ALONG THE BOTTOM EDGE. ETCHED AND ALODINED THE FABRICATED PARTS AND PRIMED WITH SUPER KOROPON EPOXY PRIMER. INSTALLED THE "T" ANGLE AND THE DOUBLER ON THE AFT SIDE OF THE WEB USING MS20470AD-4 AND MS20470AD-5 RIVETS. ALL WORK PERFORMED IAW THE CASA 212 SRM, SECTION IV FIG. 4.16 AND APPENDIX II FIG. B22 AS WELL AS AC43.13-1B, PARA. 4-57. SEE FAA FORM 337 DATED DEC. 8, 2025.