# NTSB DEN85LA195: Schweizer G-164B-600, N6825K, Riverton, WY, July 22, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 22, 1985, 09:45 local (15:45 UTC)
- Place: Riverton, WY
- Coordinates: 43.030574, -108.410629 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.0306&lon=-108.4106&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16730
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN85LA195
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16730/pdf
- Page: https://openairdocs.org/ntsb/DEN85LA195

## Sequence of events

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

- Airframe/component/system failure/malfunction, maneuvering - aerial application
  - wing,bracing wire - separation (contributing factor)
  - anxiety/apprehension, pilot in command (cause)
- Nose over, landing - roll
  - precautionary landing - performed, pilot in command (cause)
  - brakes(normal) - excessive, pilot in command (cause)
  - emotional reaction, pilot in command (cause)

## Analysis

THE PLT WAS CROP SPRAYING A FIELD IN A SCHWEIZER AG-CAT ACFT WHEN THE LEFT LANDING WIRE BROKE. THE PLT RETURNED TO RIVERTON, WY. DURING THE LANDING ROLL, IN ATTEMPT TO STOP THE ACFT AS SOON AS POSSIBLE, HE INADVERTENTLY APPLIED THE BRAKES TOO HARD, CAUSING THE ACFT TO NOSE OVER.

## Aircraft

- Registration: [N6825K](https://openairdocs.org/deregistered/N6825K-2008-02-21), registration cancelled 2008-02-21, S/N 500B, built 1978 (OpenAirDocs)
- Reported make and model: Schweizer G-164B-600
- 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: 500B
- Airframe hours: 1531
- Engines: P&W R1340-AN-1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 137
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 18, 1985
- Airport: RIW, Riverton Regional, runway 28, 8,200 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 1,380 total, 650 in this make and model, 1,330 as pilot in command, 180 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none

## 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 19850722033179A](https://openairdocs.org/incident/19850722033179A), Jul 22, 1985: Scwzer G164B, Riverton, WY, Substantial damage. Left landing wire broke while spraying a field. During landing, too much braking was used, aircraft flipped over.

## Other investigations on N6825K (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 MKC84LA214](https://openairdocs.org/ntsb/MKC84LA214), Jul 13, 1984: Grumman G-164B (N6825K), Brule, NE, substantial damage

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.