As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MX IT WAS DISCOVERED THAT THE LT EXIT DOOR AT ROW 6A WOULD NOT LATCH SHUT PROPERLY. MX REMOVED AND REPLACED THE EXIT DOOR WHICH WAS REMOVED FROM ACFT IN SERVICEABLE CONDITION IAW 52-20-00. LEAK CHECK IAW 21-30-00 AND OPS CHECK WERE GOOD. THE ORIGINAL DOORS UPPER SHAFT ASSY WAS REMOVED AND REPLACED WHICH WAS THE ROOT CAUSE OF THE PROBLEM.