What was found
DURING M-CHECK FOUND CRACK IN AFT PRESSURE BULKHEAD UPPER DOOR FRAME -21 HAS .5 INCH CRACK AT RIVNUT. REPAIRED PER SRM 53-13-3 & DWG 5917579.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING M-CHECK FOUND CRACK IN AFT PRESSURE BULKHEAD UPPER DOOR FRAME -21 HAS .5 INCH CRACK AT RIVNUT. REPAIRED PER SRM 53-13-3 & DWG 5917579.