What was found
COMPLY WITH: 670BA-53-040 - FUSELAGE - CENTER FUSELAGE, PRIMARY STRUCTURE FS280.00 TO FS295.00 - INSPECTION AND REINFORCEMENT OF LINTEL STRINGER 3 OF THE MAIN PASSENGER DOOR REV C PART(S) B ((FILED - CLOSED) COMPLIED WITH: 670BA-53-040 PART B, FUSELAGE - CENTER FUSELAGE, PRIMARY STRUCTURE FS280.00 TO FS295.00 - REINFORCEMENT OF LINTEL STRINGER 3 OF THE MAIN PASSENGER DOOR REV C PART(S) COMPLETED M-337 AND COMPLIED WITH TASK CARD 51-900-1002-SKY.