# NTSB FTW89DRD06: Grumman-Schweizer G-164B, N6693Q, Ville Platte, LA, June 6, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: June 6, 1989, 10:00 local (15:00 UTC)
- Place: Ville Platte, LA
- Coordinates: 30.690971, -92.279411 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.6910&lon=-92.2794&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 28, 1991
- Report: Approved by Office Director
- NTSB case key (mKey): 22727
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW89DRD06
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22727/pdf
- Page: https://openairdocs.org/ntsb/FTW89DRD06

## Probable cause

WEAR AND/OR FAILURE OF THE CARBURETOR/FLOAT.  FACTORS RELATED TO THE ACCIDENT WERE:  THE TERRAIN CONDITIONS.

## 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, approach
  - fuel system,carburetor - worn (cause)
  - fuel system,carburetor float - cracked (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - hidden obstruction(s) (contributing factor)
  - terrain condition - high vegetation (contributing factor)
  - terrain condition - ditch (contributing factor)
- Nose over, landing

## Analysis

THE PLT WAS RETURNING TO THE LANDING STRIP WHEN THE ENG LOST POWER & WOULD NOT RESTART. DURING AN EMERGENCY LANDING, THE ACFT HIT A DITCH THAT WAS HIDDEN BY TALL GRASS, THEN NOSED OVER. AN EXAM OF THE CARBURETOR REVEALED THREE CRACKS IN THE FLOAT AND WEAR OF THE SHAFT, BUSHINGS, MIXTURE CONTROL FLANGE & FLOAT NEEDLE.

## Aircraft

- Registration: [N6693Q](https://openairdocs.org/deregistered/N6693Q-2013-04-30), registration cancelled 2013-04-30, S/N 212B, built 1977 (OpenAirDocs)
- Reported make and model: Grumman-Schweizer 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 R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 212B
- Airframe hours: 4153
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Young Flyers
- Registered owner: Patrick Aaron Young
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, November 11, 1988, 308 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 13,000 total, 2,500 in this make and model, 12,950 as pilot in command, 75 in the last 90 days, 25 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 160° at 6 knots
- Visibility: 7 statute miles
- Lowest ceiling: 16,000 ft broken
- Temperature: 84 °F, dew point 77 °F
- Altimeter: 29.00 inHg
- Observed at: LFT, 40 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 19890606014499A](https://openairdocs.org/incident/19890606014499A), Jun 6, 1989: Scwzer G164B, Ville Platte, LA, Substantial damage. Reported engine quit on approach. Nosed over landing off airport. Engine problem not given, report says no defects.

## Other investigations on N6693Q (2)

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 FTW93LA179](https://openairdocs.org/ntsb/FTW93LA179), Jun 5, 1993: Grumman-Schweizer G-164B (N6693Q), Kaplan, LA, substantial damage. Probable cause: THE PILOT'S FAILURE TO HAVE THE AIRPLANE PROPERLY ATTENDED DURING START WHEN PEOPLE WERE AVAILABLE. A FACTOR WAS THE INADEQUATE TIE DOWN ROPE.
- [NTSB FTW90DRD10](https://openairdocs.org/ntsb/FTW90DRD10), Jun 4, 1990: Grumman G-164B (N6693Q), Mamou, LA, substantial damage. Probable cause: PILOT MISJUDGED WIND INFORMATION. FACTORS CONTRIBUTING TO THE ACCIDENT WERE THE TAILWIND, THE TREES AND THE LEVEE.

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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