What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During a part 91 instructional proficiency flight at kict, the aircraft completed a planned no-flap landing and subsequent touch-and-go. During climb out on the upwind leg at approximately 700–800' AGL, the aft cargo door unlatched and blew open in flight. The door structurally impacted the airframe, causing substantial cosmetic/structural cracking to the RH aft window and the surrounding fuselage bulkhead attach points. The open door safety switch successfully triggered an inoperative flap configuration. Post-flight inspection revealed both cockpit door handles/latches were still physically selected to the engaged/closed position.
As the FAA filed it
DURING A PART 91 INSTRUCTIONAL PROFICIENCY FLIGHT AT KICT, THE AIRCRAFT COMPLETED A PLANNED NO-FLAP LANDING AND SUBSEQUENT TOUCH-AND-GO. DURING CLIMB OUT ON THE UPWIND LEG AT APPROXIMATELY 700–800' AGL, THE AFT CARGO DOOR UNLATCHED AND BLEW OPEN IN FLIGHT. THE DOOR STRUCTURALLY IMPACTED THE AIRFRAME, CAUSING SUBSTANTIAL COSMETIC/STRUCTURAL CRACKING TO THE RH AFT WINDOW AND THE SURROUNDING FUSELAGE BULKHEAD ATTACH POINTS. THE OPEN DOOR SAFETY SWITCH SUCCESSFULLY TRIGGERED AN INOPERATIVE FLAP CONFIGURATION. POST-FLIGHT INSPECTION REVEALED BOTH COCKPIT DOOR HANDLES/LATCHES WERE STILL PHYSICALLY SELECTED TO THE ENGAGED/CLOSED POSITION.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.