As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SIG EVENT - UPON ARRIVAL IN DEN IT WAS REPORTED THAT THE EXTERIOR AIRSTAIR DOOR HANDLE DETACHED FROM THE DOOR. ACFT HAD FERRIED TO CYS FOR REPAIRS AND WAS SUBSEQUENTLY GROUNDED TO LEASING AGREEMENT ISSUES. MX RE-INSTALLED THE AIRSTAIR DOOR EXTERIOR HANDLE IAW BEECH 1900D 52-10. OPS CHECK WAS OK. RII INSPECTION FOR THE AIRSTAIR DOOR EXTERIOR HANDLE INSTALLATION COMPLIED WITH PER TASKCARD 4.3.14 AND WORKED SATISFACTORY.