# NTSB LAX74DUJ04: Grumman G-164A, N7232, Tonapah, AZ, July 19, 1973

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 19, 1973
- 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 October 2, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 189324
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX74DUJ04
- Page: https://openairdocs.org/ntsb/LAX74DUJ04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2250  73/7/19    TONAPAH,ARIZ        GRUMMAN G-164A      CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 42, 10250
        TIME - 0610                    N7232               PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 2950 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BUCKEYE,ARIZ                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: SWATH RUN
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - DISCONNECTED
           TERRAIN - WET,SOFT GROUND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 8750                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - COTTON                                    TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          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 -  950
          SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- MASTER ROD,P/N-232292,FAILED AT WRIST PIN.
```

## Aircraft

- Registration: N7232 (not matched to a registry record)
- Reported make and model: GRUMMAN G-164A
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## 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 19730719024739A](https://openairdocs.org/incident/19730719024739A), Jul 19, 1973: Gulstm G164A, Tonapah, AZ, Substantial damage. Master rod,P/N-232292,failed at wrist pin.

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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