NTSB Identification: SEA90LA105.
The docket is stored on NTSB microfiche number 41428.
Accident occurred Thursday, June 21, 1990 in JEROME, ID
Probable Cause Approval Date: 12/15/1992
Aircraft: AIR TRACTOR AT-401, registration: N4530N
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

DURING AN AERIAL APPLICATION FLIGHT, THE PILOT HAD COMPLETED ONE PASS OVER THE FIELD AND A TURN TO REVERSE DIRECTION WAS MADE WITH PARTIAL FLAPS EXTENDED. THE PILOT RETRACTED THE FLAPS AT A LOW ALTITUDE AND THE AIRPLANE SETTLED. AS IT SETTLED, THE AIRPLANE COLLIDED INTO A DRAINAGE EMBANKMENT. THE PILOT REPORTED THAT THERE WERE NO MECHANICAL FAILURES OR MALFUNCTIONS WITH THE AIRPLANE AT THE TIME OF THE ACCIDENT.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

THE PILOT DID NOT MAINTAIN A PROPER ALTITUDE WHILE MANEUVERING TO REVERSE DIRECTION.

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