NTSB Identification: LAX83LA207.
The docket is stored on NTSB microfiche number 21028.
Accident occurred Sunday, May 01, 1983 in GILROY, CA
Aircraft: AERO COMMANDER 600 S-2D, registration: N1785S
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.

PRIOR TO TAKEOFF, THE ACFT WAS FULLY FUELED WITH 100 GAL OF AVIATION GASOLINE & WAS LOADED WITH 300 GAL OF NON-TOXIC FUNGICIDAL MIX. THE PLT TOOK OFF, FLEW APRX 5 MI TO A FIELD, AND AFTER CIRCLING OVER THE FIELD, MADE 2 SWATH RUNS. DURING A PROCEDURE TURN AFTER THE 2ND SWATH RUN, THE ENGINE LOST POWER. SUBSEQUENTLY, THE ACFT CRASHED IN A STEEP, NOSE DOWN ATTITUDE. AN INVESTIGAITON REVEALED THAT A PORTION OF THE #5 CYLINDER WAS MISSING & WAS NOT WITH THE MAIN WRECKAGE. A VISUAL EXAM OF THE FRACTURE SURFACE INDICATED EVIDENCE OF FATIGUE.

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

ENGINE ASSEMBLY,CYLINDER..FATIGUE

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

AIRSPEED..INADEQUATE..PILOT IN COMMAND

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

STALL..INADVERTENT..PILOT IN COMMAND

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