# NTSB UNK64X1872: Piper PA18, N6794B, Nisland, SD, May 21, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 21, 1964
- Place: Nisland, SD · NISLAND, SD
- Location: 44.6730° N, 103.5538° W: Placed by OpenAirDocs: center of Nisland, SD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.6730&lon=-103.5538&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 23, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 184032
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1872
- Page: https://openairdocs.org/ntsb/UNK64X1872

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1360  64/5/21    NISLAND S DAK       PIPER PA18          CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1915                    N6794B              PX-  0  0  0  AERIAL APPLICATION        AGE 21, 1708 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            110 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: PROCEDURE TURNAROUND
           STALL                                                    LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
          PWR PLT- LEAK IN OIL COOLER CAUSED SMOKE.
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  500                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - BELLY                             ELEVATION-AREA BEING TREATED-FEET -  2900
          SWATH RUN-HOW FLOWN - DOWNWIND                           PROCEDURE TURNAROUND - THIRD 1/3 TURN
```

## Aircraft

- Registration: [N6794B](https://openairdocs.org/deregistered/N6794B-1990-10-22), registration cancelled 1990-10-22, S/N 185031 (OpenAirDocs)
- Reported make and model: PIPER PA18
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: 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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