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NTSB investigation record

CEN21LA110

Completed

Air tractor inc At-502· N4540C

Date
January 9, 2021
Location
Cushing, OK
Conditions
VMC
Record
Published August 20, 2021

Primary finding

Probable cause

The pilot’s decision to takeoff from unsuitable terrain which resulted in an aerodynamic stall and subsequent impact with terrain.

Investigator assessment

Analysis narrative

The pilot stated that he intended to depart from a soft, muddy runway and was having a difficult time becoming airborne. When the airplane reached a spot of the runway that was not as muddy, the airplane “popped out of the mud” and reached an altitude of about 30 ft above the ground. Before he could lower the nose to gain airspeed, the left wing stalled and the airplane impacted the surrounding terrain resulting in substantial damage to the fuselage, tail, and both wings. The pilot stated that there were no mechanical anomalies with the airplane that would have precluded normal operations.

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