What was found
DURING CHECK-C MAINTENANCE, AFT CABIN FOUND CUTOUT IN MEMBRANE APPROXIMATELY 5 INCHES SQUARE INVOLVING A LIGHTENING HOLE OTBD OF NUMBER 1 TRACK, LT STA 1283 TO 1286. INSTALLED MEMBRANE DOUBLER PER SRM 53-05, FIG 96 SHEET 3.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CHECK-C MAINTENANCE, AFT CABIN FOUND CUTOUT IN MEMBRANE APPROXIMATELY 5 INCHES SQUARE INVOLVING A LIGHTENING HOLE OTBD OF NUMBER 1 TRACK, LT STA 1283 TO 1286. INSTALLED MEMBRANE DOUBLER PER SRM 53-05, FIG 96 SHEET 3.