As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN ENTRANCE DOOR INNER HANDLE TRIGGER MECHANISM, A PLASTIC PIECE BROKE OFF AND GOT LODGED IN THE HANDLE BEHIND THE SPRING. THIS CAUSED THE TRIGGER TO JAM AND NOT CLEAR THE TRACK DETENT, JAMMING THE HANDLE OPERATION. THE PAX DOOR HAD TO BE OPENED FROM THE OUTSIDE.