Accident Details
The accident occurred during the takeoff roll on Runway 1L, which measures 6,700 feet by 100 feet and consists of dry grooved concrete. The airport's automated surface observing system recorded wind from 050 degrees at 10 knots. When the pilot deselected nose wheel steering at approximately 60 knots, the airplane veered towards the left.
Examination Findings
Post-accident examination of the airplane revealed several configuration discrepancies. The trailing edge flaps and the corresponding cockpit control were found in the 1/2 flap position. Additionally, two of the left propeller's start locks were engaged, while the third start lock was damaged. On the right propeller, two start locks were not engaged, and the remaining start lock cam exhibited a witness mark prior to the locking point of the cam.
Operational Context
The airplane's checklist specifies that flaps should be in the retracted position and that the engine start locks must be disengaged prior to takeoff. Furthermore, the airplane flight manual does not contain performance data for takeoff configurations with 1/2 flaps. Despite the discrepancies, examination of the airplane revealed no mechanical anomalies.
Damage
The airplane sustained substantial damage as a result of the incident.