Accident Details
Shortly after takeoff, while climbing, the airplane stalled and crashed in a wooded area located 2,400 meters past the runway end. A crew member and a passenger were killed, while 16 other occupants were injured. The airplane was totally destroyed by a post-crash fire.
Probable Cause
During the investigation, when the port propeller was being dismantled, it was discovered that the distributor valve was broken from the base of the junction with the engine crankshaft, the first threads having broken. The break appeared to be due to fatigue. From the evidence, the rupture of the distributor valve of the port propeller appears to have been the main cause of the accident, additional factors being unfavorable terrain, wind, and altitude conditions.