# NTSB MKC86LA114: Grumman-Schweizer G-164A, N6680Q, Winona, KS, May 20, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 20, 1986, 17:30 local (22:30 UTC)
- Place: Winona, KS
- Coordinates: 39.060859, -101.240165 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.0609&lon=-101.2402&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 34181
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC86LA114
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34181/pdf
- Page: https://openairdocs.org/ntsb/MKC86LA114

## Sequence of events

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

- Loss of engine power, go-around (vfr)
  - reason for occurrence undetermined (cause)
- Forced landing, go-around (vfr)
- In flight collision with terrain/water, landing
  - airspeed - not maintained, pilot in command (cause)
  - weather condition - high density altitude
  - stall - inadvertent, pilot in command
- Nose over, landing
  - recovery from bounced landing - not performed, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (contributing factor)

## Analysis

THE PILOT STATED THAT HE BORROWED THE AIRPLANE FROM HIS FATHER TO PRACTICE TAKEOFFS AND LANDINGS AT HIS FATHER'S PRIVATE, CROP DUSTING AIRSTRIP. THERE WERE NO CHEMICALS ONBOARD, ACCORDING TO THE PILOT. HE FURTHER STATED THAT ON A GO-AROUND MANEUVER, AND AS HE TRIED TO GO OVER A BUILDING, THE ENGINE LOST POWER AND HE WAS FORCED TO LAND THE AIRCRAFT IN A OPEN FIELD. THE AIRCRAFT STALLED, TOUCHED DOWN HARD, BOUNCED, THEN NOSED OVER. WINDS WERE FROM THE SOUTHEAST AT 16 KNOTS AND THE PILOT WAS USING RUNWAY 09. DENSITY ALTITUDE WAS DETERMINED TO 5,600 FEET. CAUSE OF THE REPORTED LOSS OF POWER WAS NOT DETERMINED.

## Aircraft

- Registration: [N6680Q](https://openairdocs.org/aircraft/N6680Q), registered now, S/N 1699, built 1977 (OpenAirDocs)
- Reported make and model: GRUMMAN-SCHWEIZER 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 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1699
- Airframe hours: 1117
- Engines: P&W R-985-AN1 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: David H. Gfeller
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, March 21, 1986, 20 hours before
- Airport: runway 9, 2,600 × 25 ft, dirt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 20; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 260 total, 11 in this make and model, 250 as pilot in command, 3 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 16 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 48 °F
- Altimeter: 29.00 inHg
- Observed at: GLD, 27 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 19860520021059A](https://openairdocs.org/incident/19860520021059A), May 20, 1986: Scwzer G164A, Winona, KS, Substantial damage. Aircraft stalled during attempted go around. Pilot failed to take density altitude into account.

## Other investigations on N6680Q (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 FTW78DPG30](https://openairdocs.org/ntsb/FTW78DPG30), May 10, 1978: Grumman G-164A (N6680Q), Stuttgart, AR, destroyed

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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