Incident Overview
A maintenance test flight ended with the aircraft departing the runway after encountering irregularities on the runway surface. The pilot reported that during the takeoff roll, at approximately 800 feet from the approach end of the runway, the airplane went over a large hump. This caused the airplane to veer to the left, prompting the pilot to abort the takeoff.
Passenger Account
A passenger on board, who was present to monitor instruments for the maintenance test flight, provided a different sequence of events. According to the passenger, the airplane entered a large dip in the runway about 1,200 feet from the approach end. The dip caused the airplane to become airborne near stall speed. Subsequently, the left wing struck the ground, and the airplane departed the left side of the runway at approximately a 45-degree angle.
Final Sequence
After leaving the runway, the airplane traveled an additional 1,000 feet before striking a row of small trees, where it came to rest. The pilot had stated that the takeoff was aborted following the veer to the left, though the passenger's account suggests the aircraft became airborne before the wing strike.
No further details about injuries, damage, or the specific aircraft type were provided in the source.