NTSB Identification: LAX86FVA12.
The docket is stored on NTSB microfiche number 34525.
Accident occurred Tuesday, July 22, 1986 in TRANQUILITY, CA
Probable Cause Approval Date: 03/10/1988
Aircraft: AYRES S2R, registration: N4023S
Injuries: 1 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

DURING AN AERIAL APPLICATION OPERATION THE AIRCRAFT WAS OBSERVED TO HAVE MADE A PASS OVER THE FIELD, BEGAN TURNING TO MAKE ANOTHER PASS WHEN A LOUD POP WAS HEARD. JUST AFTER THE NOISE, WITNESSES OBSERVED THE AIRCRAFT SPIN AS THE TURN LIGHTS MOUNTED ON THE WINGS WERE OBSERVED TO ROTATE WITH THE AIRPLANE. NO PREIMPACT MECHANICAL MALFUNCTION/FAILURE WAS FOUND.

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

REASON FOR OCCURRENCE UNDETERMINED


Contributing Factors

TERRAIN CONDITION..OPEN FIELD


Contributing Factors

STALL/SPIN..UNCONTROLLED..PILOT IN COMMAND

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