NTSB Identification: FTW85LA256.
The docket is stored on NTSB microfiche number 30445.
Accident occurred Friday, June 14, 1985 in BROWNSVILLE, TX
Aircraft: AIR TRACTOR AT-301, registration: N23692
Injuries: 1 Serious.

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

THE AG ACFT WAS DESTROYED WHEN IT FAILED TO PULL OUT OF AN AERIAL APPLICATION MANEUVER FOLLOWING THE INITIAL SWATH RUN OVER A FIELD. THE PLT STATED THAT AFTER MAKING HIS TURN TO RETURN TO THE FIELD, HE ATTEMPTED TO LEVEL THE ACFT AND RECEIVED NO RESPONSE FROM THE ELEVATOR CONTROLS. THE OPERATOR'S POST-ACDT EXAMINATION OF THE WRECKAGE REVEALED THAT AN 'AN-410' BOLT WAS MISSING BETWEEN THE ELEVATOR TORQUE TUBE AND THE ELEVATOR HORNS. THE BOLT AND LOCK NUT WERE NOT FOUND IN THE WRECKAGE.

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

FLT CONTROL SYST,AILERON CONTROL..DISCONNECTED

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

TERRAIN CONDITION..OPEN FIELD

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

TERRAIN CONDITION..WET

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

TERRAIN CONDITION..ROUGH/UNEVEN

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