NTSB Identification: MIA90LA146.
The docket is stored on NTSB microfiche number 41809.
Accident occurred Wednesday, June 27, 1990 in FORT PIERCE, FL
Probable Cause Approval Date: 09/28/1992
Aircraft: Ayres S-2R, registration: N4909X
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.

WHILE MANEUVERING DURING AN AERIAL APPLICATION FLT, THE ENG QUIT, DUE TO THE TYPE OF CHEMICAL ABOARD, THE PLT WAS UNABLE TO DUMP IT & LANDED THE ACFT IN A FIELD. THE ACFT CAUGHT FIRE & WAS DESROYED. EXAM OF THE ENG REVEALED THAT THE ENG DRIVEN FUEL PUMP SHAFT FAILED. METALLURGICAL EXAM REVEALED THAT IT FAILED DUE TO OVERLOAD. ACCORDING TO THE OPERATOR, THE ENG WAS OVERHAULED ABOUT 98 HRS EARLIER BUT THE ENG DRIVEN FUEL PUMP WAS NOT. NO DETERMINATION COULD BE MADE AS TO THE TOTAL TIME ON THE PUMP OR THE TIME SINCE MAJOR OVERHAUL.

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

ENGINE FAILURE DUE TO FAILURE OF THE ENGINE DRIVEN FUEL PUMP SHAFT DUE TO UNDETERMINED REASONS.

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