Air Tractor Inc AT-802A N830DA accident near Onalaska, Texas

Probable cause

The pilot’s failure to maintain directional control during takeoff from a lake in gusting wind conditions.

NTSB analysis

The pilot was participating in firefighting operations and reported seven water tank re-fills (scoops) from the lake from the accident location before he stopped to refuel. Upon returning for the eighth scoop, the wind had increased, and the lake surface conditions were rougher than before. The pilot found it difficult to fill the water tank in the rough surface conditions and decided to abort his scoop run early. He closed the water filling scoops while trying to keep the nose of the airplane straight. He added power and rudder and had not transitioned to flight when the nose veered uncontrollably, and the airplane rotated almost 180°. The floats separated from the airplane and the right wing struck the water and sustained substantial damaged.

Examination of the airplane revealed no mechanical malfunctions or anomalies that would have precluded normal operation. Damage signatures did not indicate the airplane hit an object in the water. Recorded data showed the propeller rpm decreased to zero over three seconds, followed by the airplane rotating 153° to the right. A weather report from a nearby airport showed gusty wind conditions and the terminal aerodrome forecast (TAF) predicted thunderstorms in the vicinity around the time of the accident.

Text from the NTSB. Open the NTSB docket for CEN22LA386 for the full record.