Casualties unknown

1983-09-14: Wormley WIZARD/T-38 (N4415V) — Val Jay Mccullough — Spanish Fork, UT

Spanish Fork, UT, US

On September 14, 1983, a Wormley WIZARD/T-38 (registration N4415V) operated by Val Jay Mccullough was involved in an aviation accident near Spanish Fork, UT. Investigators recorded the probable cause as: The pilot's failure to maintain adequate airspeed during takeoff, resulting in an aerodynamic stall and subsequent ground collision. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

An aircraft stalled shortly after takeoff at approximately 75 feet above the runway. The pilot attempted to correct the slow airspeed by pushing the stick forward and reducing power, but the plane fell nose-down into the ground.

What happened

The aircraft collided with the terrain immediately following a stall that occurred during the initial climb phase of takeoff. This incident took place at an altitude of approximately 75 feet above the runway surface.

According to the pilot's account, the takeoff roll on Runway 30 was unusually short, lasting only about 200 feet before rotation and liftoff. As the aircraft began its ascent, the pilot realized that the airspeed was dangerously low. At roughly 75 feet above the ground, a buffet was felt, indicating an impending stall condition.

In an effort to prevent a full power-on stall, the pilot pushed the control stick forward and simultaneously reduced engine power. Despite these corrective actions, the aircraft lost altitude rapidly and impacted the ground in a nose-down attitude of approximately 4 degrees.

The investigation

The investigation focused on the pilot's narrative regarding the takeoff performance and the subsequent aerodynamic behavior of the aircraft. Examination of the flight dynamics revealed that the early initiation of the climb, combined with low airspeed, led to an aerodynamic stall before a safe altitude could be regained.

Findings

Several critical factors contributed to this accident. The primary issue was stall during takeoff. The pilot's decision to rotate and climb at only 200 feet of ground roll likely resulted in insufficient airspeed for the aircraft type. Additionally, the corrective action of reducing power while already in a low-energy state may have exacerbated the loss of lift. The final impact attitude confirms that the aircraft was unable to maintain controlled flight after the stall occurred.

Probable cause

The pilot's failure to maintain adequate airspeed during takeoff, resulting in an aerodynamic stall and subsequent ground collision.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X44504. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.