# NTSB LAX92LA340: Grumman G-164B, N6809K, Tolleson, AZ, August 9, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 9, 1992, 07:00 local (14:00 UTC)
- Place: Tolleson, AZ
- Coordinates: 33.41996, -112.269783 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.4200&lon=-112.2698&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 31, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 27723
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX92LA340
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/27723/pdf
- Page: https://openairdocs.org/ntsb/LAX92LA340

## Probable cause

THE PILOT'S SELECTION OF UNSUITABLE TERRAIN FOR TAKEOFF. CONTRIBUTING TO THIS ACCIDENT WAS THE RAVINE THAT CROSSED THE RUNWAY.

## Sequence of events

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

- On ground/water encounter with terrain/water, takeoff - roll/run
  - terrain condition - ravine (contributing factor)
  - terrain condition - dirt bank/rising embankment
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)

## Analysis

THE PILOT WAS BEGINNING AN AGRICULTURAL AERIAL APPLICATION FLIGHT FROM A PRIVATELY OWNED DIRT AIRSTRIP.  DURING THE TAKEOFF ROLL THE AIRPLANE STRUCK A WASHED OUT RAVINE THAT CROSSED THE RUNWAY, PITCHED UP, AND STALLED.  THE PILOT WAS UNABLE TO GAIN ANY FLYING SPEED AND THE AIRPLANE BOUNCED TWO MORE TIMES UNTIL ITS TAILWHEEL STRUCK A DIRT EMBANKMENT AT THE END ON THE RUNWAY.

## Aircraft

- Registration: [N6809K](https://openairdocs.org/deregistered/N6809K-2017-04-04), registration cancelled 2017-04-04, S/N 494B, 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: 494B
- Engines: P&W R-1340 650 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Freeway Av Ag, Inc
- Registered owner: Freeway Av Ag, Inc
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, January 2, 1900
- Airport: Freeway Av Ag

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 584 total, 291 in this make and model, 291 in the last 90 days, 160 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 97 °F

## 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 19920809029909A](https://openairdocs.org/incident/19920809029909A), Aug 9, 1992: Scwzer G164B, Tolleson, AZ, Substantial damage. Struck a washed out ravine on takeoff. Bounced,pitched up and stalled. On sucessive bounces tail hit dirt embankment

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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