MENDOTA, CA, USA
N8578S
AIR TRACTOR AT-301
REPORTEDLY, THE AIRCRAFT SETTLED DOWNWARD AS IT WAS SLOWED TO BEGIN A SPRAY RUN. THE PILOT ADDED FULL THROTTLE AND JETTISONED THE HOPPER CONTENTS BEFORE THE AIRCRAFT COLLIDED WITH THE GROUND. INSPECTION OF THE STALL WARNING SYSTEM REVEALED THE STALL WARNING WAS NOT CONNECTED. THE ENGINE HAD BEEN OPERATING WITH AUTOMOTIVE FUEL. THERE WERE NO MECHANICAL MALFUNCTIONS FOUND WITH THE AIRCRAFT OR ENGINE PRIOR TO THE ACCIDENT SEQUENCE.
A LOSS OF AIRCRAFT CONTROL BY THE PILOT WHEN HE SLOWED THE AIRCRAFT TO BEGIN A SPRAY RUN. CONTRIBUTING TO THE LOSS OF CONTROL WAS THE INOPERATIVE STALL WARNING SYSTEM.
Source: NTSB Aviation Accident Database
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