# NTSB LAX81DUJ91: Grumman G-164B, N6776K, Tonapah, AZ, August 29, 1981

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 29, 1981
- Place: Tonapah, AZ · TONAPAH, AZ
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report January 15, 1982
- Report: Brief approved by the director
- NTSB case key (mKey): 124101
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX81DUJ91
- Page: https://openairdocs.org/ntsb/LAX81DUJ91

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2996  81/8/29    TONAPAH,AZ          GRUMMAN G-164B      CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 27, 2614
        TIME - 1730                    N6776K              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 2214 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - DIRT STRIP
        DEPARTURE POINT             INTENDED DESTINATION
          TONAPAH,AZ                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: RETURN TO STRIP
           NOSE OVER/DOWN                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - IGNITION SYSTEM: MAGNETOS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - LOOSE GRAVEL
           TERRAIN - SANDY
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 2215                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - COTTON                                    TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  1100
        REMARKS- L MAG BREAKER PTS NOT OPENING,R MAG BREAKER PTS OPEN ON SOME CAM LOBES.
```

## Aircraft

- Registration: [N6776K](https://openairdocs.org/deregistered/N6776K-2013-05-02), registration cancelled 2013-05-02, S/N 465B, 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
- Engines: reciprocating
- Damage: Destroyed
- Airport: Dirt Strip

## 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 19810829053529A](https://openairdocs.org/incident/19810829053529A), Aug 29, 1981: Grumav G164B, Tonopah, AZ, Substantial damage. Engine quit returning to ag strip. Landed adjacent to runway, nosed over. One magneto inop, other intermittant.

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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