# NTSB FTW79DPJ22: Piper PA-25, N6436Z, Perkins, OK, May 28, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 28, 1979
- Place: Perkins, OK · PERKINS, OK
- Location: 35.9798° N, 97.0313° W: Placed by OpenAirDocs: center of Perkins, OK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.9798&lon=-97.0313&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 15, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 135797
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW79DPJ22
- Page: https://openairdocs.org/ntsb/FTW79DPJ22

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1581  79/5/28  NR.PERKINS,OK         PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1045                    N6436Z              PX-  0  0  0  AERIAL APPLICATION        AGE 23, 1515 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            200 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          STILLWATER,OK               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: SWATH RUN
           COLLIDED WITH: CROP                                      LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
           TERRAIN - HIGH VEGETATION
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  175                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - USED                                           CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  600                 SWATH RUN-HOW FLOWN - WIND CALM
```

## Aircraft

- Registration: [N6436Z](https://openairdocs.org/deregistered/N6436Z-2014-11-12), registration cancelled 2014-11-12, S/N 25-592, built 1961 (OpenAirDocs)
- Reported make and model: PIPER PA-25
- Registry model: [Piper PA-25](https://openairdocs.org/model/piper-pa-25) (registry code 7102502) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (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 19790528016519A](https://openairdocs.org/incident/19790528016519A), May 28, 1979: Piper PA25, Perkins, OK, Substantial damage. Pilot said he had engine malfunction and made emerg landing on unsuitable field which caused acft to flip inverted

## Other investigations on N6436Z (2)

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 FTW78DPJ12](https://openairdocs.org/ntsb/FTW78DPJ12), Mar 26, 1978: Piper PA-25 (N6436Z), Cashion, OK, substantial damage
- [NTSB FTW67F0186](https://openairdocs.org/ntsb/FTW67F0186), Aug 26, 1966: Piper PA-25 (N6436Z), Pawnee, TX, 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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