# NTSB OAK74DVD36: Piper PA-25, N4779Y, Healdsburg, CA, May 20, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 20, 1974
- Place: Healdsburg, CA · HEALDSBURG, CA
- Location: 38.6225° N, 122.8651° W: Placed by OpenAirDocs: center of Healdsburg, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.6225&lon=-122.8651&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 8, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 125966
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74DVD36
- Page: https://openairdocs.org/ntsb/OAK74DVD36

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1745  74/5/20    HEALDSBURG,CALIF    PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 45, 4000
        TIME - 0630                    N4779Y              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 900 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - HEALDSBURG
        DEPARTURE POINT             INTENDED DESTINATION
          HEALDSBURG,CALIF            LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: PULLUP FROM SWATH RUN
           COLLIDED WITH: OBJECT                                    LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - LUBRICATING SYSTEM: LINES,HOSES,FITTING
           MISCELLANEOUS ACTS,CONDITIONS - OVERHEATED
           MISCELLANEOUS ACTS,CONDITIONS - DISCONNECTED
           MISCELLANEOUS ACTS,CONDITIONS - OIL EXHAUSTION-ENGINE LUBRICATION SYSTEM
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  900                       KIND OF OPERATION - DUSTING CROPS
          KIND OF CROP - GRAPES                                    TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - USED                                           CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  200
        REMARKS- COLLISION WITH GRAPE VINES AND IRON POSTS. OIL LINE OVRHTD & SEPARATED.
```

## Aircraft

- Registration: [N4779Y](https://openairdocs.org/deregistered/N4779Y-1983-04-11), registration cancelled 1983-04-11, S/N 25-4546, built 1968 (OpenAirDocs)
- Reported make and model: PIPER PA-25
- Registry model: [Piper PA-25-260](https://openairdocs.org/model/piper-pa-25-260) (registry code 7102508) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Healdsburg

## 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 19740520020229A](https://openairdocs.org/incident/19740520020229A), May 20, 1974: Piper PA25260, Healdsburg, CA, Substantial damage. Collision with grape vines and iron posts. Oil line ovrhtd & separated.

## Other investigations on N4779Y (3)

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 SEA81FYP05](https://openairdocs.org/ntsb/SEA81FYP05), Jan 30, 1981: Piper PA-25 (N4779Y), Mesa, WA, destroyed
- [NTSB OAK77DVD25](https://openairdocs.org/ntsb/OAK77DVD25), Mar 8, 1977: Piper PA-25 (N4779Y), Healdsburg, CA, substantial damage
- [NTSB OAK70D0069](https://openairdocs.org/ntsb/OAK70D0069), Jun 20, 1969: Piper PA-25 (N4779Y), Tulelake, 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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.