# NTSB OAK68D0329: Grumman G-164, N5254, Grimes, CA, March 27, 1968

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: March 27, 1968
- Place: Grimes, CA · GRIMES, CA
- Location: 39.0742° N, 121.8988° W: Placed by OpenAirDocs: center of Grimes, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.0742&lon=-121.8988&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report April 26, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 111685
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK68D0329
- Page: https://openairdocs.org/ntsb/OAK68D0329

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0632  68/3/27    GRIMES,CALIF        GRUMMAN G-164       CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 29, 6300
        TIME - 0800                    N5254               PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 3000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - THAYER BROS.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       TAKEOFF: RUN
           NOSE OVER/DOWN                                           TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: HYDRAULIC PITCH CONTROL MECHANISM
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 6000                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - USED
          GOGGLES - USED                                           CRASH HELMET - AVAILABLE USED
          CRASH BAR - INSTALLED                                    TANK/HOPPER-LOCATION - FORWARD OF PILOT
          TERRAIN-TYPE -LEVEL,FLAT                                 ELEVATION-AREA BEING TREATED-FEET -  47
        REMARKS- CONNECTING BOLT BETWEEN THE GOVERNOR CONTROL AND THE ACTUATING ROD WAS LOST.SPRAYING ALFALFA.
```

## Aircraft

- Registration: [N5254](https://openairdocs.org/deregistered/N5254-1999-03-29), registration cancelled 1999-03-29, S/N 534 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164
- Registry model: [Grumman G-164A](https://openairdocs.org/model/grumman-g-164a) (registry code 3952704) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Thayer Bros.

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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