What was found
AFT CARGO DOOR SURROUND STRUCTURE EXTERNAL SKIN BELOW CUTOUT HAS CORROSION AROUND FASTENER HOLES STA 797-842 RBL 27 / BLENDED AND REMOVED CORROSION AT AFT CARGO DOOR SURROUND EXTERNAL SKIN BELOW CUTOUT AROUND FASTENER HOLES ORG T .080' MAX MATERIAL LOSS OF .007' WITH .073' MATERIAL REMAINING. WITHIN LIMITS ACCOMPLISH HFEC OF BLENDED AREA; OPEN HOLES AND COUNTERSINKS NO DEFECTS NOTED RESTORED FINISH ALL WORK ACCOMPLISHED I/A/W EA 190282 REV IR AND S/W EA 1-753-34733 REV IR. FOLLOW UP ACTION REQUIRED SPEC LIMIT START DATE 15MAY19 INSPECTION THRESHOLD 547 DAYS. CONTACT SERVICE ENGINEERING FOR STAGE II AND III INSPECTION THRESHOLD; METHODS AND INTERVALS. REFERENCE BOEING MESSAGE SVS - SWA - 19 -0144.