What was found
DETECTED .50 INCH CRACK IN OUTER AIRCRAFT DOOR SKIN ORIGINATING AT END OF FORWARD SIDE OF DOOR HINGE AND EXTENDING UPWARDS. DISASSEMBLED DOOR AND FOUND THE FOLLOWING PARTS HAD FAILED: 466240-03 BRACKET (ON FORWRD LOWER SIDE) 466550-02 BULKHEAD (ON OUTER FLANGE ACROSS 2 RIVET HOLES) AND 46550-04 BULKHEAD (ON OUTER FLANGE ACROSS 2 RIVET HOLES). REPLACED ALL THREE SHEET METAL COMPONENTS, FABRICATED AND INSTALLED EXTERNAL DOUBLER OVER CRACKED AREA OF EXTERNAL DOOR SKIN IAW AC 43.13-1A AND 2A.