Incident Overview
Shortly after takeoff, the propeller on the aircraft's left engine separated from the engine. Following the separation, the aircraft continued to climb straight ahead before being observed in a steep left turn. During this turn, the aircraft descended and crashed into the roof of a building located approximately one-quarter mile southeast of the airport.
Discovery of Components
One left engine propeller blade was found on the runway. The other propeller blade, along with associated components, was discovered along the right side of the runway. Examination of the propeller hub revealed that it had separated longitudinally along the centerline.
Maintenance History
Both the left and right propellers had been overhauled and installed on the aircraft during its recent annual inspection. The aircraft had accumulated a total of 3.6 hours of flight time since the installation of the propellers.
Investigation
The investigation focused on the physical evidence, including the separated propeller hub and the distribution of components along the runway. No further details regarding the cause of the separation have been provided.