# NTSB ATL90DLT01: Grumman G-164B, N6683K, Tiptonville, TN, April 16, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: April 16, 1990, 17:30 local (22:30 UTC)
- Place: Tiptonville, TN
- Coordinates: 36.259296, -89.479835 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.2593&lon=-89.4798&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 14, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 8094
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL90DLT01
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/8094/pdf
- Page: https://openairdocs.org/ntsb/ATL90DLT01

## Probable cause

A LOSS OF ENGINE POWER FOR UNDETERMINED REASONS. A FACTOR IN THE ACCIDENT WAS THE ROUGH TERRAIN.

## Sequence of events

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

- Loss of engine power, maneuvering - aerial application
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- On ground/water collision with object, landing - roll
  - terrain condition - ditch (contributing factor)
- Nose over, landing - roll

## Analysis

ACCORDING TO THE FAA INSPECTOR THE ENGINE BEGAN TO RUN ROUGHLY DURING THE FINAL AERIAL APPLICATION SWATH. THE PILOT HEADED FOR HIS HOME FIELD. WHEN THE ENGINE BEGAN TO LOSE POWER, HE REALIZED HE WOULD NOT GET THAT FAR. HE ELECTED TO LAND IN A PLOWED FIELD. ON LANDING ROLL THE AIRPLANE CONTACTED A DITCH & NOSED OVER. THE INSPECTOR DID NOT DETERMINE THE REASON FOR THE ENGINE ROUGHNESS.

## Aircraft

- Registration: [N6683K](https://openairdocs.org/aircraft/N6683K), registered now, S/N 417 B, built 1978 (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: 417B
- Airframe hours: 5000
- Engines: P&W R 1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Ben H. Abbott, doing business as Abbott Flying Service
- Registered owner: Atm Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, June 28, 1990, 200 hours before
- Departed: PVT, WYNNBURG, TN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 63; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: rear; flight hours: 29,000 total, 8,000 in this make and model, 28,700 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Lowest ceiling: none
- Temperature: 90 °F, dew point 79 °F
- Altimeter: 30.00 inHg

## 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 19900416009569A](https://openairdocs.org/incident/19900416009569A), Apr 16, 1990: Scwzer G164B, Tiptonville, TN, Substantial damage. Reported engine quit. Nosed over in plowed field. Report says no mechanical. Cause power failure unknown.

## Other investigations on N6683K (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 CEN09LA451](https://openairdocs.org/ntsb/CEN09LA451), Jul 10, 2009: Grumman Acft ENG Cor-Schweizer G-164B (N6683K), Beaman, IA, substantial damage. Probable cause: The loss of engine power during initial climb for undetermined reasons.

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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