# NTSB DEN82DA036: Piper PA-18, N4380Z, Plentywood, MT, February 14, 1982

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: February 13, 1982, 17:30 local (Feb 14, 1982, 00:30 UTC)
- Place: Plentywood, MT
- Coordinates: 48.72092, -104.570007 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.7209&lon=-104.5700&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report February 13, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 72259
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82DA036
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72259/pdf
- Page: https://openairdocs.org/ntsb/DEN82DA036

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Nose over, unknown
  - reason for occurrence undetermined (cause)
  - terrain condition - snow covered

## Analysis

ON 2/16/82, THE COUNTY SHERIFF RECEIVED INFORMATION THAT THE PILOT HAD WRECKED HIS AIRCRAFT ON 2/13/82.  HE WENT TO THE SCENE AND OBSERVED THE AIRCRAFT IN AN INVERTED POSITION ON SNOW COVERED TERRAIN.  ON 2/20/82, HE RECEIVED INFORMATION THAT THE PILOT HAD ANOTHER ACCIDENT.  THE SHERIFF WENT OUT AGAIN AND FOUND THE AIRCRAFT ON ITS TOP ABOUT 2 OR 3 MILES SOUTHWEST OF THE LOCATION OF THE FIRST MISHAP.  HE ALSO NOTED THAT THE PILOT'S TRACTORS AND ONE PICK-UP TRUCK WERE LOCATED WHERE A RUNWAY HAD BEEN PLOWED AT THE LOCATION OF THE FIRST MISHAP. A DOCTOR THAT EXAMINED THE PILOT AFTER THE CRASH STATED THAT THE PILOT SAID HE HAD BEEN HUNTING COYOTES.  THE PILOT WAS UNCOOPERATIVE IN PROVIDING INFORMATION CONCERNING THE ACCIDENT.  ACCORDING TO FAA RECORDS, THE PILOT HAD NO VALID PILOT LICENSE OR MEDICAL CERTIFICATE.  HIS PREVIOUS LICENSE HAD BEEN REVOKED.

## Aircraft

- Registration: [N4380Z](https://openairdocs.org/aircraft/N4380Z), registered now, S/N 18-8703, built 1968 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- 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
- Serial number: 18-8703
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Olaf L. Hjelm
- Registered owner: Stockhill Aviation Inc.

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; medical: unknown

## Weather

- Conditions: Night/bright

## 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 19820213004439A](https://openairdocs.org/incident/19820213004439A), Feb 13, 1982: Piper PA18150, Plentywood, MT, Substantial damage. Crashed while hunting coyotes at night.

## Other investigations on N4380Z (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 SEA76DTI36](https://openairdocs.org/ntsb/SEA76DTI36), Aug 11, 1976: Piper PA-18 (N4380Z), Condon, MT, 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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