# NTSB OAK76DVG49: Piper PA-25, N7677Z, Walnut Grove, CA, March 9, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 9, 1976
- Place: Walnut Grove, CA · WALNUT GROVE, CA
- Location: 38.2543° N, 121.5358° W: Placed by OpenAirDocs: center of Walnut Grove, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.2543&lon=-121.5358&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 27, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 153096
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK76DVG49
- Page: https://openairdocs.org/ntsb/OAK76DVG49

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0591   76/3/9    WALNUT GROVE,CA     PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1630                    N7677Z              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   AGE 53, 15100 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, 3000 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - SPEZIA AG STRIP
        DEPARTURE POINT             INTENDED DESTINATION
          WALNUT GROVE,CA             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: EN ROUTE TO TREAT CROP
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: PISTON,PISTON RINGS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - WET,SOFT GROUND
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 9999                       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  ELEVATION-AREA BEING TREATED-FEET -  0
        REMARKS- NR 3 PISTON FAILED.
```

## Aircraft

- Registration: [N7677Z](https://openairdocs.org/aircraft/N7677Z), registered now, S/N 25-3826, built 1966 (OpenAirDocs)
- Reported make and model: PIPER PA-25
- Registry model: [Piper PA-25-235](https://openairdocs.org/model/piper-pa-25-235) (registry code 7102504) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Spezia Ag Strip

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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