# NTSB ANC82DA099: Piper PA-12, N7765H, Nr. White Mount, AK, September 27, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: September 27, 1982
- Place: Nr. White Mount, AK
- Coordinates: 64.680397, -163.409286 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=64.6804&lon=-163.4093&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report September 27, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 72057
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC82DA099
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72057/pdf
- Page: https://openairdocs.org/ntsb/ANC82DA099

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - anti-ice/deice system,carburetor/heat - failure,partial (cause)
  - carburetor heat - attempted, pilot in command (contributing factor)
  - weather condition - carburetor icing conditions (contributing factor)
  - aircraft preflight - inadequate, pilot in command (cause)
  - weather evaluation - poor, pilot in command (contributing factor)
  - judgment - poor, pilot in command (cause)
- Forced landing, landing - flare/touchdown
  - weather condition - low ceiling (contributing factor)

## Analysis

THE AIRCRAFT COLLIDED WITH THE TUNDRA DURING A FORCED LANDING IN MARGINAL WEATHER. THE PILOT SAID THE ENGINE CONTINUED TO LOSE ENGINE RPM EVEN THOUGH HE USED CARBURETOR HEAT. THE CARBURETOR HEAT HOSE WAS FOUND TO BE BADLY DETERIORATED DURING POST ACCIDENT EXAMINATION.

## Aircraft

- Registration: [N7765H](https://openairdocs.org/aircraft/N7765H), registered now, S/N 12-663, built 1946 (OpenAirDocs)
- Reported make and model: PIPER PA-12
- Registry model: [Piper PA-12](https://openairdocs.org/model/piper-pa-12) (registry code 7101202) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 12-663
- Airframe hours: 2973
- Engines: LYCOMING O-235-C 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Richard M. Patterson
- Registered owner: Louis H. Green, Jr.
- Departed: C, BEAR CREEK #1, AK
- Destination: C, NOME, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 852 total, 60 in this make and model, 731 as pilot in command, 97 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: variable at 10 knots
- Visibility: 3 statute miles
- Lowest ceiling: 1,000 ft overcast
- Temperature: 104 °F

## 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 19820927049729A](https://openairdocs.org/incident/19820927049729A), Sep 27, 1982: Piper PA12, Nome, AK, Substantial damage. Lost power en route. Crash landed on tundra. Found alternate air and cabin heater hose and fittings deteriorated.

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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