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NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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June 22, 1985 · Grumman G-164A · N5337

Deming, NM

Overview

Report Status
Preliminary report
Event Type
Accident
Date
June 22, 1985
Injury Outcomes
No injuries (1 uninjured)
Location
Deming, NM
Aircraft
Grumman G-164A
Tail Number
N5337
Operator
Ag Air Service
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN85LA173

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.

Full Narrative

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.

Flight

Event TypeAccident
Event Time08:30 MDT
Nearest Airport8nm SW
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftGrumman G-164A
Tail NumberN5337
Aircraft CategoryAir
DamageSubstantial
OperatorAg Air Service
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R-985-AN1 · Reciprocating · 450
Seats1

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 52 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind230° @ 6 kt
Visibility60 sm
CeilingNone
Temperature / Dew Point39 C
Altimeter30.00 inHg
Observation Time14:51
Weather SourceWFAC

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Appendix: Source Data