As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN OPENING THE MAIN CABIN DOOR, A METAL PIECE ON THE BOTTOM OF THE DOOR FELL OFF. LOOKS LIKE A PIECE OF THE GIRT BAR. REINSTALLED GIR BAR END, NO RII AT BHM PLACED DOOR ON MEL REF ABOVE MEL AND MM 52_11_00_5_0 A/C OK FOR SERVICE. INSPECTED L1 DOOR SLIDE GIRT BAR. ENGAGED AND OPERATED GIRT BAR MULTIPLE TIMES. OPS GOOD. NO DEECTS NOTED.