# NTSB DEN82DA069: Piper PA-18-150, N1759P, Hardin, MT, April 23, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: April 23, 1982, 11:50 local (18:50 UTC)
- Place: Hardin, MT
- Coordinates: 45.699542, -107.690261 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.6995&lon=-107.6903&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 23, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70959
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82DA069
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70959/pdf
- Page: https://openairdocs.org/ntsb/DEN82DA069

## Sequence of events

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

- Nose over, landing - roll
  - weather condition - high density altitude (contributing factor)
  - terrain condition - soft (contributing factor)
  - brakes(normal) - improper use of, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command

## Analysis

THE PILOT AND HIS COPILOT WERE ON A FLIGHT TO A PRIVATE RANCH STRIP. THE PILOT REPORTED THAT HIS APPROACH WAS NORMAL, EXCEPT IT WAS HOT AND GROUND EFFECT CARRIED THE PLANE A LITTLE TOO FAR. HE STATED THAT THE FIELD WAS SOFT, AND WHEN HE APPLIED BRAKES LIGHTLY, THE PLANE NOSED OVER. THE COPILOT STATED THAT THE AIRCRAFT SKIDDED AND WENT UPSIDE DOWN. IN AN INTERVIEW SHORTLY AFTER THE ACCIDENT, THE PILOT SAID THAT THE AIRCRAFT HAD RECENTLY BEEN MODIFIED WITH CLEVELAND BRAKES AND THAT HE WAS NOT COMPLETELY ACCUSTOMED TO THEM. THE WIND WAS CALM, THE TEMPERATURE WAS 74 DEGREES FAHRENHEIT, AND THE FIELD ELEVATION WAS ABOUT 2800 FT.

## Aircraft

- Registration: [N1759P](https://openairdocs.org/aircraft/N1759P), registered now, S/N 18-4079, built 1954 (OpenAirDocs)
- Reported make and model: PIPER PA-18-150
- 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: 184079
- Airframe hours: 1177
- Engines: LYCOMING O-320-A2A 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Harry & Ellen Allen
- Registered owner: Harry & Ellen Allen
- Departed: SHR, SHERIDAN, WY
- Destination: OBERLIN, LA
- Airport: Pocket Creek Ranch

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 138 total, 130 in this make and model, 90 as pilot in command, 15 in the last 90 days, 15 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 10 knots
- Visibility: 50 statute miles
- Temperature: 165 °F
- Altimeter: 29.00 inHg
- Observed at: BIL, 46 nm away

## 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 19820423013759A](https://openairdocs.org/incident/19820423013759A), Apr 23, 1982: Piper PA18150, Hardin, MT, Substantial damage. Aircraft flipped inverted during landing on soft sod runway.

## Other investigations on N1759P (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 ANC88LA131](https://openairdocs.org/ntsb/ANC88LA131), Sep 9, 1988: Piper PA-18 (N1759P), Iliamna, AK, 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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.