Incident Overview
A pilot conducting a flight to transport marijuana began experiencing mechanical issues shortly after takeoff. The right propeller started to separate from its mounting flange. In response, the pilot turned the airplane back toward the airport, but mistakenly feathered the wrong propeller. He then began throwing duffle bags containing marijuana from the aircraft.
Collision and Injuries
The airplane subsequently collided with a tree, wires, and a privately owned residence. Two individuals inside the residence sustained minor injuries as a result of the impact.
Post-Accident Examination
A post-accident examination of the wreckage revealed several mechanical deficiencies. The safety wire securing the propeller mounting studs was found broken. Three of the six propeller mounting studs were broken, while the remaining studs had backed off. Additionally, the right engine oil system contained extensive metal particles, and the propeller governor oil screen had been altered, allowing unfiltered oil flow.
Operational Context
The pilot was engaged in transporting marijuana in duffle bags at the time of the accident. The jettisoning of the bags occurred during the emergency maneuver.
Findings
No probable cause was stated in the investigation source. The examination documented failures in the propeller mounting system and modifications to the oil system.