NTSB Identification: DEN84LA192.
The docket is stored on NTSB microfiche number 25880.
Accident occurred Saturday, June 23, 1984 in MURDO, SD
Aircraft: GRUMMAN G-164A, registration: N8974H
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 PILOT REPORTED THE ENGINE FAILED WHILE HE WAS IN A PROCEDURE TURN. THE PILOT MADE A FORCED LANDING IN AN OPEN FIELD AND THE ACFT NOSED OVER. EXAMINATION OF THE ENGINE AFTER THE ACCIDENT REVEALED THE ENGINE 'SWALLOWED AN EXHAUST VALVE' THAT CAUSED THE 'CYLINDER HEAD TO BLOW OFF.'

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

ENGINE ASSEMBLY,VALVE,INTAKE..FAILURE,TOTAL


Contributing Factors

TERRAIN CONDITION..OPEN FIELD


Contributing Factors

TERRAIN CONDITION..SOFT


Contributing Factors

ENGINE ASSEMBLY,CYLINDER..SEPARATION

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