What happened
The flight was initiated as a short field takeoff operation. During the ground roll, the pilot failed to extend the flaps to the required configuration for this type of departure. Following rotation at the appropriate airspeed, the pilot assessed the climb performance and determined that the aircraft lacked the necessary altitude margin to clear a power line situated off the end of the runway.
Consequently, the pilot initiated an abort of the takeoff while still in the initial climb phase. The aircraft descended back toward the runway surface and ran off the end of the paved area. Upon exiting the runway environment, the aircraft struck a fence and subsequently entered a ditch. The impact forces caused the aircraft to nosing over and come to rest in an inverted position.
The investigation
Post-accident examination of the airframe revealed substantial damage consistent with the described sequence of events. The structural integrity of the fuselage and control surfaces was compromised due to the ground impact and subsequent inversion. No mechanical failures or malfunctions with the engines or flight controls were identified that would have precluded normal operation.
Findings
The primary factor contributing to the accident was the pilot's decision to abort the takeoff after rotation without sufficient airspeed or altitude to clear the obstacle. This decision was precipitated by the failure to lower the flaps for the short field takeoff, which degraded climb performance. The combination of improper configuration and late recognition of the performance deficit led to the loss of control and subsequent collision with terrain and obstacles.