# NTSB SEA84LA047: Piper PA-20, N7771K, Imnaha, OR, January 27, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 27, 1984, 11:30 local (19:30 UTC)
- Place: Imnaha, OR
- Coordinates: 45.459568, -116.749397 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.4596&lon=-116.7494&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39869
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA84LA047
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39869/pdf
- Page: https://openairdocs.org/ntsb/SEA84LA047

## Analysis

THE ACFT NOSED OVER DURING A FORCED LANDING ON A SNOW COVERED FIELD. THE PLT REPORTED THAT THE ACFT BEGAN TO LOSE POWER AT ABOUT 6500 FT MSL. AN INSPECTION OF THE ENG DID NOT REVEAL ANY MECHANICAL MALFUNCTION OR DISCREPANCY.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - fuel system,carburetor - ice (contributing factor)
  - carburetor heat - improper use of, pilot in command (cause)
  - weather condition - carburetor icing conditions (contributing factor)
- Forced landing, landing - flare/touchdown
- Nose over, landing - roll

## Aircraft

- Registration: [N7771K](https://openairdocs.org/deregistered/N7771K-2008-01-30), registration cancelled 2008-01-30, S/N 20-605, built 1951 (OpenAirDocs)
- Reported make and model: PIPER PA-20
- Registry model: [Piper PA-20](https://openairdocs.org/model/piper-pa-20) (registry code 7102002) (OpenAirDocs)
- Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 20-605
- Airframe hours: 2876
- Engines: LYCOMING O-290-D 125 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Jack H. Ross
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 1, 1983
- Departed: PDT, PENDLETON, OR
- Destination: LORDS FLAT, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 125 total, 125 in this make and model, 70 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: 1,500 ft broken
- Temperature: 28 °F, dew point 25 °F
- Altimeter: 30.00 inHg
- Observed at: BKE, 58 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 19840127001939A](https://openairdocs.org/incident/19840127001939A), Jan 27, 1984: Piper PA20, Imnaha, OR, Substantial damage. Reported rough engine landed on a snow covered field hit a snowbank and nosed over. Possible carburetor icing.

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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