# NTSB LAX71DUJ31: Piper PA-25, N4917Y, Poston, AZ, September 16, 1970

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: September 16, 1970
- Place: Poston, AZ · POSTON, AZ
- Location: 33.9921° N, 114.4045° W: Placed by OpenAirDocs: center of Poston, AZ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.9921&lon=-114.4045&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report June 28, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 141011
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX71DUJ31
- Page: https://openairdocs.org/ntsb/LAX71DUJ31

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3725  70/9/16  NR.POSTON,ARIZ        PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 39, 3350
        TIME - 0815                    N4917Y              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 2400 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         POSTON,ARIZ                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: STARTING SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 2400                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - COTTON                                    TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 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 -  400
         FIRE AFTER IMPACT
        REMARKS- HIT KNOWN PWR LINES 40 FT AGL.
```

## Aircraft

- Registration: [N4917Y](https://openairdocs.org/deregistered/N4917Y-1971-10-05), registration cancelled 1971-10-05, S/N 25-4720 (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)
- 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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