In-Flight Propeller Separation Leads to Fatal Lake Crash Near Henderson (N208UB)

Accident Overview and Immediate Sequence of Events During cruising altitude, the propeller blades on the left engine of the aircraft detached. The in-flight separation of the propeller blade caused the left engine to tear away from the airframe. Following this structural failure, the pilot lost control of the aircraft. The airplane subsequently dove into the ground and crashed into a lake located near Henderson. The impact and subsequent crash destroyed the aircraft, and all four occupants on board were killed. ## Official Findings The official investigation determined that the probable cause of the accident was the left engine tearaway following the in-flight separation of the propeller blade due to fatigue fracture. The findings indicate that the failure originated with the propeller blade, which separated while the aircraft was at cruising altitude, leading to the loss of the engine and the subsequent loss of control.