NTSB Identification: SEA89LA059.
The docket is stored on NTSB microfiche number 38024.
Accident occurred Saturday, March 25, 1989 in ROSALIA, WA
Probable Cause Approval Date: 09/28/1990
Aircraft: Grumman-Schweizer G-164A, registration: N8792H
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.

THE PLT EXPERIENCED A PWR LOSS ON TAKEOFF AND JETTISONED THE LOAD. A FORCED LANDING WAS MADE IN A PLOWED FIELD DURING WHICH THE ACFT NOSED OVER. INVESTIGATION REVEALED THE PWR LOSS WAS DUE TO A SUPERCHARGER FAILURE.

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

A LOSS OF ENGINE POWER DUE TO A SUPERCHARGER FAILURE. CONTRIBUTING TO THE ACCIDENT WAS THE SOFT TERRAIN ON WHICH THE FORCED LANDING WAS MADE.

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