# NTSB OAK74DVD13: Piper PA-25, N4429Y, Stockton, CA, July 25, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 25, 1973
- Place: Stockton, CA · STOCKTON, CA
- Location: 37.9577° N, 121.2908° W: Placed by OpenAirDocs: center of Stockton, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.9577&lon=-121.2908&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 1, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 188960
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74DVD13
- Page: https://openairdocs.org/ntsb/OAK74DVD13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2815  73/7/25  NR.STOCKTON,CALIF     PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1300                    N4429Y              PX-  0  0  0  AERIAL APPLICATION        AGE 21, 1050 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            280 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         STOCKTON,CALIF               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: SWATH RUN
           COLLIDED WITH: DITCHES                                   LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  160                       KIND OF OPERATION - DEFOLIATION (LIQUID)
          KIND OF CROP - POTATOES                                  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 -  10
          SWATH RUN-HOW FLOWN - UNKNOWN/NOT REPORTED               PROCEDURE TURNAROUND - ENTRY TO PROCEDURE TURN
        REMARKS- SMALL AMT SILT FOUND IN CARB FLOAT BOWL.ONLY DISC NOTED.ENG RAN NORMAL WITH NO REPAIR OR ADJUSTMT.
```

## Aircraft

- Registration: [N4429Y](https://openairdocs.org/aircraft/N4429Y), registered now, S/N 25-4055 (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: Stockton

## 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 19730725025039A](https://openairdocs.org/incident/19730725025039A), Jul 25, 1973: Piper PA25235, CA, Substantial damage

## Other investigations on N4429Y (2)

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.

- [NTSB OAK76DVD26](https://openairdocs.org/ntsb/OAK76DVD26), Mar 3, 1976: Piper PA-25 (N4429Y), Tracy, CA, substantial damage
- [NTSB OAK69F0302](https://openairdocs.org/ntsb/OAK69F0302), May 9, 1969: Piper PA-25 (N4429Y), Stockton, CA, substantial damage

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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