As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT MAIN CABIN DOOR VENT FLAP HANDLE OUT OF ALIGNMENT. REMOVED FROM SERVICE. FOUND UPPER LINER INTERFERING WITH VENT FLAP HANDLE. REMOVED UPPER LINER REF AMM TASK 25-23-07-000-801-A. VERIFIED DOOR MECHANISM FOR PROPER OPERATION. NO DEFECTS NOTED. RE INSTALLED UPPER LINER ENSURING PROPER CLEARANCES FROM MECHANISM. REF AMM TASK 25-23-07-400-801-A. RETURNED TO SERVICE.