# NTSB SEA66D0077: Piper PA-18A, N8566D, Lewistown, MT, July 7, 1965

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 7, 1965
- Place: Lewistown, MT · LEWISTOWN, MT
- Location: 47.0514° N, 109.4524° W: Placed by OpenAirDocs: center of Lewistown, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.0514&lon=-109.4524&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report October 15, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 176678
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA66D0077
- Page: https://openairdocs.org/ntsb/SEA66D0077

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2518   65/7/7  NR.LEWISTOWN MONT     PIPER PA-18A        CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0600                    N8566D              PX-  0  0  0  AERIAL APPLICATION        AGE 24, 1600 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            1000 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: CROP                                      IN FLIGHT: SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED ALTITUDE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1400                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              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 - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - BELLY                             TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  4200                SWATH RUN-HOW FLOWN - DOWNWIND
```

## Aircraft

- Registration: [N8566D](https://openairdocs.org/deregistered/N8566D-2020-11-06), registration cancelled 2020-11-06, S/N 18-6220, built 1957 (OpenAirDocs)
- Reported make and model: PIPER PA-18A
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (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: Destroyed

## Other investigations on N8566D (1)

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 GAA19CA160](https://openairdocs.org/ntsb/GAA19CA160), Mar 8, 2019: Piper PA18 (N8566D), Rushville, NE, substantial damage. Probable cause: The partial loss of engine power due to the accumulation of carburetor ice, which resulted in a forced landing on rough terrain.

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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