NTSB Identification: DEN85LA173.
The docket is stored on NTSB microfiche number 29116.
Accident occurred Saturday, June 22, 1985 in DEMING, NM
Aircraft: GRUMMAN G-164A, registration: N5337
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 TOLD FAA HE WAS SPRAYING A COTTON FIELD AND WAS TURNING AROUND FROM A SWATH RUN WHEN THE PROPELLER FEATHERED. THE PLT TOLD NTSB THAT THE ACFT 'PITCHED UPWARD AND LOST POWER.' ACFT TYPE CERTIFICATE SHOWS THAT A HAMILTON STANDARD PROPELLER M/N 2D30/6101A-12-13-14 IS INSTALLED. PROPELLER REMOVED FROM ACFT WAS A HARTZELL M/N HCB3W30-2B, AN UNAPPROVED INSTALLATION. PROP DISASSEMBLY REVEALED A SPACER HAD BEEN PLACED IN RING ASSEMBLY, MAKING IT IMPOSSIBLE FOR PROP TO FEATHER. BLADE CLAMPS INSIDE PROP HUB WEE BROKEN. NO. 1 BLADE WAS IN FEATHERED POSITION, NO. 2 BLADE WAS NEAR FEATHER, AND NO. 3 BLADE WAS PAST FEATHER. THERE WAS NO EVIDENCE OF AN OIL LOSS OR PROP GOVERNOR FAILURE/MALFUNCTION.

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

PROPELLER GOVERNOR CONTROL..FAILURE,TOTAL

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

MAINTENANCE,INSTALLATION..IMPROPER..OTHER MAINTENANCE PERSONNEL

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

PROPELLER SYSTEM/ACCESSORIES..IMPROPER



Contributing Factors

TERRAIN CONDITION..DIRT BANK/RISING EMBANKMENT


Contributing Factors

TERRAIN CONDITION..HIGH VEGETATION

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