# NTSB FTW77FPM11: Piper PA-25, N4646Y, Pryor, OK, May 28, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 28, 1977
- Place: Pryor, OK · PRYOR, OK
- Location: 36.3084° N, 95.3169° W: Placed by OpenAirDocs: center of Pryor, OK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.3084&lon=-95.3169&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 1, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 158292
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW77FPM11
- Page: https://openairdocs.org/ntsb/FTW77FPM11

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1037  77/5/28    PRYOR,OK            PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 34, 1200
        TIME - 1830                    N4646Y              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 400 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PRYOR,OK                    LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: TREES                                     IN FLIGHT: SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED CLEARANCE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  400                       KIND OF OPERATION - FERTILIZING (LIQUID)
          KIND OF CROP - CLOVER                                    TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT 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 -  750                 SWATH RUN-HOW FLOWN - DOWNWIND
```

## Aircraft

- Registration: [N4646Y](https://openairdocs.org/deregistered/N4646Y-1981-05-14), registration cancelled 1981-05-14, S/N 25-4366, built 1967 (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: Substantial damage

## 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 19770528014059A](https://openairdocs.org/incident/19770528014059A), May 28, 1977: Piper PA25235, Pryor, OK, 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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