# NTSB SEA66F0052: Piper PA18A, N7573D, Sunnyside, WA, July 10, 1965

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 10, 1965
- Place: Sunnyside, WA · SUNNYSIDE, WA
- Location: 46.3157° N, 120.0056° W: Placed by OpenAirDocs: center of Sunnyside, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.3157&lon=-120.0056&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report October 20, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 177218
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA66F0052
- Page: https://openairdocs.org/ntsb/SEA66F0052

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0512  65/7/10  NR.SUNNYSIDE WASH     PIPER PA18A         CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 28, 850
        TIME - 0430                    N7573D              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 300 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           TURBULENCE                                               IN FLIGHT: PULLUP FROM SWATH RUN
        PROBABLE CAUSE(S)
           MISCELLANEOUS - VORTEX TURBULENCE
          PILOT-TOXIC POISON IMPAIRED PHYSICAL EFFICIENCY
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  168                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - AFT OF PILOT                      TERRAIN-TYPE -HILLY
          ELEVATION-AREA BEING TREATED-FEET -  1000                SWATH RUN-HOW FLOWN - WIND CALM
          PROCEDURE TURNAROUND - ENTRY TO PROCEDURE TURN
        REMARKS- TOXIC SPRAY CHEMICAL PHOSDRIN BEING USED
```

## Aircraft

- Registration: [N7573D](https://openairdocs.org/deregistered/N7573D-1965-08-26), registration cancelled 1965-08-26, S/N 18-5860 (OpenAirDocs)
- Reported make and model: PIPER PA18A
- Registry model: [Piper PA-18A 150](https://openairdocs.org/model/piper-pa-18a-150) (registry code 7101837) (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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