# NTSB UNK64X3215: Piper PA25, N6747Z, Helm, CA, August 4, 1964

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 4, 1964
- Place: Helm, CA · HELM, CA
- Location: 36.5316° N, 120.0982° W: Placed by OpenAirDocs: center of Helm, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.5316&lon=-120.0982&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report October 21, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 182310
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X3215
- Page: https://openairdocs.org/ntsb/UNK64X3215

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2348   64/8/4    HELM CALIF          PIPER PA25          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 37, 4100
        TIME - 0300                    N6747Z              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 1950 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: PROCEDURE TURNAROUND
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 3700                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          CRASH HELMET - AVAILABLE-NOT USED                        COCKPIT CRASHPAD - INSTALLED
          CRASH BAR - INSTALLED                                    TANK/HOPPER-LOCATION - FORWARD OF PILOT
          TERRAIN-TYPE -LEVEL,FLAT                                 ELEVATION-AREA BEING TREATED-FEET -  320
          SWATH RUN-HOW FLOWN - WIND CALM                          PROCEDURE TURNAROUND - SECOND 1/3 TURN
```

## Aircraft

- Registration: [N6747Z](https://openairdocs.org/deregistered/N6747Z-1964-09-11), registration cancelled 1964-09-11, S/N 25-2362 (OpenAirDocs)
- Reported make and model: PIPER PA25
- Registry model: [Piper PA-25-235](https://openairdocs.org/model/piper-pa-25-235) (registry code 7102504) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

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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