# NTSB SEA87LA067: Grumman G164B, N6798Q, Reubens, ID, March 20, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 19, 1987, 16:00 local (Mar 20, 1987, 00:00 UTC)
- Place: Reubens, ID
- Coordinates: 46.359294, -116.509361 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.3593&lon=-116.5094&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 7, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 40600
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA87LA067
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40600/pdf
- Page: https://openairdocs.org/ntsb/SEA87LA067

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - landing gear,main gear attachment - failure,total (cause)
  - directional control - not possible (contributing factor)
- On ground/water encounter with terrain/water, takeoff - roll/run
  - terrain condition - ditch (contributing factor)
- Nose over, takeoff - roll/run

## Analysis

DURING TAKEOFF RUN THE AIRCRAFT VEERED TO THE RIGHT OF THE RUNWAY, STRUCK A DITCH, AND THEN NOSED OVER INVERTED. THE PILOT FOUND THAT THE RIGHT DOWEL PIN ON THE RIGHT MAIN GEAR HAD BROKEN. THE REASON FOR THE FAILURE COULD NOT BE DETERMINED.

## Aircraft

- Registration: [N6798Q](https://openairdocs.org/aircraft/N6798Q), registered now, S/N 310B, built 1977 (OpenAirDocs)
- Reported make and model: GRUMMAN G164B
- 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: [Continental R-975 series](https://openairdocs.org/engine/continental-r-975-series) (registry code 17037, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 310B
- Airframe hours: 3522
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 91
- Operator: Larry Boyer Land & Cattle Rnch
- Registered owner: Larry Boyer Land & Cattle Rnch
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 30, 1986
- Departed: REUBENS, ID
- Airport: Star Mill, runway 27, 2,500 ×  ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; toxicology performed; flight hours: 4,891 total, 330 in this make and model, 4,704 as pilot in command, 90 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 3 knots
- Visibility: 3 statute miles
- Lowest ceiling: none
- Temperature: 45 °F
- Altimeter: 29.00 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 19870319008059A](https://openairdocs.org/incident/19870319008059A), Mar 19, 1987: Scwzer G164B, Reubens, ID, Substantial damage. Veered off runway on takeoff and nosed over in a ditch. Dowel pin on right main gear broke. Allowed wheel turnout.

## Other investigations on N6798Q (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 SEA84LA133](https://openairdocs.org/ntsb/SEA84LA133), Jun 14, 1984: Grumman G-164B-450 (N6798Q), Pullman, WA, 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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