Accident Sequence
During an aerial pipeline survey flight, an eyewitness observed the airplane initiate a steep climb. The aircraft then performed a wing-over type maneuver, followed by a steep dive. The airplane subsequently collided with the ground in a wings-level, slightly nose-high attitude.
Impact and Wreckage
The initial impact scars and propeller strikes indicated a high vertical sink rate at the moment of collision. Based on the propeller slash marks, the forward velocity was approximately 142 knots. The total ground travel after impact was 285 feet, excluding the main wheel assemblies.
Investigation
The investigation focused on the sequence of events as described by the eyewitness and the physical evidence at the accident site. No further details regarding the cause of the maneuver or the accident were provided in the source material.