As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER DOOR NOT LATCHED AT AFT PIN PRIOR TO TAKEOFF. SOON AFTER ROTATION DOOR OPENED AND THEN SEPARATED FROM ACFT AT HINGE CONNECTION ON DOOR. DOOR DID NOT CONTACT ACFT AND FELL TO SIDE OF RUNWAY WITH MINOR DAMAGE. PILOT CONTINUED CLIMB AND ENTERED PATTERN FOR UNEVENTFUL LANDING. TAXIED TO HANGAR AND SHUTDOWN ENGINE. NO DAMAGE TO MAIN STRUCTURE OF ACFT. DOOR WILL REQUIRE REPLACEMENT OF HINGE, LIKELY PLEXIGLASS WINDOW, AND GAS STRUT.