# NTSB FTW92LA143: Grumman G-164B, N8380K, Walnut Ridge, AR, May 23, 1992

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 23, 1992, 09:30 local (14:30 UTC)
- Place: Walnut Ridge, AR
- Coordinates: 36.060211, -90.949356 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.0602&lon=-90.9494&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report August 13, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18505
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW92LA143
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18505/pdf
- Page: https://openairdocs.org/ntsb/FTW92LA143

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN ADEQUATE TERRAIN CLEARANCE. A FACTOR WAS THE LOSS OF POWER AS RESULT OF THE UNCOUPLING OF THE ENGINE AND THE PROPELLER.

## Sequence of events

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

- In flight collision with terrain/water, maneuvering - aerial application
  - terrain condition - berm
  - clearance - not maintained, pilot in command (cause)
  - landing gear,main gear - sheared
  - propeller system/accessories - disconnected
- Forced landing, descent - emergency
- Loss of engine power, maneuvering - turn to landing area (emergency)

## Analysis

AN AGRICULTURAL AIRPLANE COLLIDED WITH A LEVEE SEVERING BOTH MAIN LANDING GEARS. AS THE PILOT APPLIED POWER TO ATTEMPT TO FLY TO AN AIRPORT FOR AN EMERGENCY LANDING, POWER WAS LOST DUE TO THE UNCOUPLING OF THE ENGINE AND PROPELLER. DURING THE ENSUING FORCED LANDING, THE AIRPLANE NOSED OVER.

## Aircraft

- Registration: [N8380K](https://openairdocs.org/aircraft/N8380K), registered now, S/N 676B, built 1982 (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)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 6768
- Engines: GARRETT TPE 331 620 horsepower turbo prop
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Wilson Flying Service Inc.
- Registered owner: Wilson Flying Service Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, January 2, 2000, 17 hours before
- Departed: ARG
- Destination: ARG

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; flight instructor, commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 16,000 total, 4,000 in this make and model, 15,800 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 3 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 64 °F
- Altimeter: 30.00 inHg
- Observed at: ARG, 13 nm away

## 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 19920523016729A](https://openairdocs.org/incident/19920523016729A), May 23, 1992: Scwzer G164B, Walnut Ridge, AR, Substantial damage. Impacted levee on spray run. Severed main gear. Tried to return to base but prop uncoupled. Nosed over on landing.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.