What happened
While the aircraft was positioned for departure, ground personnel provided airport advisories through the UNICOM frequency. Shortly thereafter, a refueling truck entered the active runway from an adjacent area, crossing directly in front of the aircraft as it began its takeoff roll.
The pilot recognized the imminent hazard and attempted to abort the takeoff but was unable to bring the airplane to a stop before the collision occurred. With insufficient remaining runway distance to safely halt, the pilot elected to continue the takeoff attempt in an effort to clear the obstruction. As the aircraft accelerated toward rotation speed, it collided with the refueling tank.
The impact struck the aircraft's landing gear as the plane was climbing. The force of the collision caused the nose of the aircraft to pitch down violently. The airplane subsequently nosed over onto the runway surface, coming to rest after the crash sequence concluded.
The investigation
Investigators examined the physical evidence at the scene and reviewed the operational context of the incident. Key findings included:
- The refueling truck had crossed the active runway without clearance or coordination with air traffic control or the pilot.
- The aircraft's landing gear sustained damage from striking the refueling tank during the initial climb phase.
- The collision occurred while the aircraft was still on the ground, just as it was attempting to become airborne.
Findings
Several critical factors contributed to this accident. The primary issue was the unauthorized entry of a ground vehicle onto the active runway during a live takeoff operation. This created an unavoidable conflict for the pilot, who faced a split-second decision between stopping short of the obstacle or attempting to fly over it.
The pilot's decision to continue the takeoff roll was a direct response to the inability to stop in time. However, the aircraft lacked the performance capability to clear the height of the refueling truck before impact. The collision with the ground vehicle resulted in structural failure of the landing gear and loss of control, leading to the nose-over.
Safety message
This incident highlights the critical importance of runway safety and ground vehicle operations at uncontrolled airports. Ground vehicles must never enter an active runway without explicit clearance or confirmation that the runway is clear. Pilots must remain vigilant for unexpected obstacles during takeoff rolls, especially at airports where air traffic control services are not available.