What was found
UPON OPENING THE MAIN DOOR THE HANDLE DETACHED FROM THE AIRCRAFT. REMOVED TAPE & OPENED DOOR. REMOVED STEPS & ACCESSED THE INTERNAL PORTION OF THE DOOR HANDLE. REMOVED DOOR HANDLE. THE BROKEN PORTION OF THE HANDLE WAS NOT OD THE AIRCRAFT. INSTALLED A NEW EXTERNAL DOOR HANDLE IAW AMM 52-1 1-24-000-801-A & 52-1 L-24-400-80 I-A. OPENED & CLOSED DOOR WITH NO FURTHER DEFECTS NOTED. INSTALLED STEPS IAW AMM 52-14-00-000-801-A, NO DEFECTS NOTED . THE MISSING PORTION OF THE HANDLE HAS THE MAIN DOOR KEY LOCK. CONTACTED MCC AND THEY DID NOT KNOW WHERE THE HANDLE WAS. INSTALLED NEW HANDLE KEY LOCK IAW AMM 52-32-25-400-801-A & 52-32-25-000-801-A. NO DEFECTS NOTED.