# NTSB ATL82DA252: Grumman G-164C, N6787K, Gunnison, MS, August 27, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 27, 1982, 15:30 local (20:30 UTC)
- Place: Gunnison, MS
- Coordinates: 33.94075, -90.939201 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.9408&lon=-90.9392&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 27, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70928
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL82DA252
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70928/pdf
- Page: https://openairdocs.org/ntsb/ATL82DA252

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(total) - mech failure/malf, maneuvering - aerial application
  - lubricating system,oil seal - leaded (cause)
  - engine assembly,bearing - overtemperature (cause)
  - engine assembly,master rod - binding(mechanical) (cause)
- Forced landing, landing - flare/touchdown
- Nose over, landing - flare/touchdown
  - terrain condition - soft (contributing factor)

## Analysis

THE PILOT REPORTED THAT HE SMELLED SOMETHING HOT WHILE SPRAYING. HE CHECKED THE INSTRUMENTS AND NOTED THAT THE OIL TEMPERATURE GAUGE WAS INDICATING OFF THE HIGH SIDE OF THE SCALE. HE STARTED TO MAKE A PRECAUTIONARY LANDING BUT THE ENGINE SEIZED DURING FINAL APPROACH. A FORCED LANDING WAS MADE IN A FRESHLY PLOWED FIELD WHERE THE PLANE NOSED OVER. A TEARDOWN OF THE ENGINE REVEALED THAT A MASTER ROD SPACER, PN 117547, HAD FAILED. WITHOUT THIS SPACER THE MASTER ROD WOULD NOT BE PROPERLY LUBRICATED, AND REPORTEDLY, THE ENGINE COULD SEIZE. FURTHER INVESTIGATION REVEALED THAT THE ENGINE HAD BEEN OVERHAULED 93 HRS PRIOR TO THE ACCIDENT. FOLLOWING THE OVERHAUL, THE ENGINE HAD A PROBLEM LEAKING OIL PAST THE VALVES, SO IT WAS TAKEN BACK TO THE OVERHAUL FACILITY. SEVEN CYLINDERS WERE REMOVED AND REWORKED. THE ACCIDENT OCCURRED FOLLOWING A BRIEF BREAK-IN PERIOD AFTER THAT.

## Aircraft

- Registration: [N6787K](https://openairdocs.org/deregistered/N6787K-2022-02-05), registration cancelled 2022-02-05, S/N 37 C, built 1978 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164C
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164C](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164c) (registry code 3952803) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 156781
- Airframe hours: 1009
- Engines: WRIGHT R-1820-71 900 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Darryc E. Mccreary
- Registered owner: West Bolivar Flying Service
- Departed: GUNNISON, MS
- Destination: GUNNISON, MS

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 6,000 total, 430 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 5 statute miles

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19820827044549A](https://openairdocs.org/incident/19820827044549A), Aug 27, 1982: Scwzer G164C, Gunnison, MS, Substantial damage. Engine ran hot and siezed. Nosed over landing in a soft filed. Master rod bearing spacer had failed, seized bearing

## Other investigations on N6787K (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR19FA145](https://openairdocs.org/ntsb/WPR19FA145), May 15, 2019: Grumman G164 (N6787K), Pleasant Grove, CA, substantial damage, 2 fatal. Probable cause: The failure of both pilots to see and avoid the other airplane, which resulted in a midair collision.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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