# NTSB FTW82DA287: Grumman G-164B, N6689K, Humnoke, AR, July 20, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: July 20, 1982, 14:00 local (19:00 UTC)
- Place: Humnoke, AR
- Coordinates: 34.540733, -91.870689 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.5407&lon=-91.8707&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 20, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71113
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW82DA287
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71113/pdf
- Page: https://openairdocs.org/ntsb/FTW82DA287

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - airport facilities,runway/landing area condition - rough/uneven (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - proper alignment - not maintained, pilot in command (cause)
- Nose over, takeoff - roll/run

## Analysis

THE PILOT REPORTED THAT DURING TAKEOFF, THE LEFT MAIN GEAR GOT OFF THE SIDE OF THE ROUGH AIRSTRIP AND INTO A RICE FIELD. SUBSEQUENTLY, THE PLANE FLIPPED OVER.

## Aircraft

- Registration: [N6689K](https://openairdocs.org/deregistered/N6689K-1990-12-27), registration cancelled 1990-12-27, S/N 420B (OpenAirDocs)
- Reported make and model: GRUMMAN G-164B
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802) (OpenAirDocs)
- Category: Airplane
- Serial number: 420B
- Airframe hours: 1883
- Engines: P&W R-1340-AN-1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Farmer & Flying Service
- Registered owner: Farmer & Flying Service
- Departed: HUMNOKE, AR
- Destination: HUMNOKE, AR
- Airport: Isbells Strip, runway 36, 2,250 × 0 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 23; commercial; airplane ratings: multi-engine land, single-engine land; medical: class 2, valid medical--w/ waivers/lim; flight hours: 2,081 total, 925 in this make and model, 1,923 as pilot in command, 325 in the last 90 days, 10 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 2 knots
- Visibility: 20 statute miles
- Temperature: 194 °F

## 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 19820720032899A](https://openairdocs.org/incident/19820720032899A), Jul 20, 1982: Scwzer G164B, Humnoke, AR, Substantial damage. During takeoff pilot allowed one wheel to get off runway into rice field, aircraft flipped inverted.

## Other investigations on N6689K (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 LAX90DVG08](https://openairdocs.org/ntsb/LAX90DVG08), May 6, 1990: Schweizer G-164-B (N6689K), Richvale, CA, substantial damage. Probable cause: THE PILOT IN COMMAND'S FAILURE TO MAINTAIN A POSITIVE RATE OF CLIMB DURING TAKEOFF RESULTING IN THE AIRCRAFT DESCENDING INTO TERRAIN.

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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