# NTSB ATL85LA018: Grumman G-164A, N7867, Tunica, MS, October 19, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 19, 1984, 14:30 local (19:30 UTC)
- Place: Tunica, MS
- Coordinates: 34.679534, -90.379287 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.6795&lon=-90.3793&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6693
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL85LA018
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6693/pdf
- Page: https://openairdocs.org/ntsb/ATL85LA018

## Sequence of events

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

- On ground/water encounter with terrain/water, takeoff - roll/run
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (contributing factor)
  - terrain condition - wet (contributing factor)
  - terrain condition - soft (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - uncontrolled, pilot in command
- Nose over, takeoff

## Analysis

THE PILOT ATTEMPTED TAKEOFF FROM AN AGRICULTURAL SITE WHICH HAD SOFT SPOTS FROM WET CONDITIONS. DIRECTIONAL CONTROL WAS LOST WHEN ONE MAIN WHEEL ENCOUNTERED A SOFT SPOT. THE AIRCRAFT VEERED INTO A PLOWED FIELD AND FLIPPED INVERTED.

## Aircraft

- Registration: [N7867](https://openairdocs.org/deregistered/N7867-2013-02-08), registration cancelled 2013-02-08, S/N 999 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164A
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985-AN-3](https://openairdocs.org/engine/pratt-whitney-r-985-an-3) (registry code 51660, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 999
- Airframe hours: 3476
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: J. C. Cooner
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, December 13, 1983
- Airport: Cooner Airstrip, runway 29, 1,700 ×  ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 6,000 total, 3,000 in this make and model, 6,000 as pilot in command, 200 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: none

## 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 19841019061109A](https://openairdocs.org/incident/19841019061109A), Oct 19, 1984: Scwzer G164A, Tunica, MS, Substantial damage. A wheel struck a soft spot on the ag airstrip on the takeoff roll. Aircraft veered off the water covered runway.

## Other investigations on N7867 (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 ATL80FKQ03](https://openairdocs.org/ntsb/ATL80FKQ03), May 23, 1980: Grumman G-164A (N7867), Clarksdale, MS, substantial damage

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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