# NTSB ANC91LA012: Cessna 170A, N5468C, Healy, AK, November 7, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 7, 1990, 12:00 local (16:00 UTC)
- Place: Healy, AK
- Coordinates: 63.679431, -150.030685 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=63.6794&lon=-150.0307&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 8, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5510
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC91LA012
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5510/pdf
- Page: https://openairdocs.org/ntsb/ANC91LA012

## Probable cause

THE LOSS OF ENGINE POWER FOR UNDETERMINED REASONS AND THE LACK OF SUITABLE TERRAIN FOR A FORCED LANDING.

## 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
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, descent - emergency
  - weather condition - crosswind (contributing factor)
  - terrain condition - none suitable (cause)

## Analysis

THE PILOT STATED THAT HE EXPERIENCED A LOSS OF RPM AND A ROUGH RUNNING ENGINE WHILE IN CRUISE. HE THOUGHT IT WAS CAUSED BY CARBURETOR ICING, BUT APPLICATON OF CARBURETOR HEAT FAILED TO CORRECT THE PROBLEM. AFTER THE ENGINE LOST ALL POWER HE ATTEMPTED TO LAND ON A ROAD, BUT DUE TO THE STRONG WINGS, CRASHED ON THE FROZEN TUNDRA. NO PROBLEMS CONSIDERED CAUSAL TO THE POWER LOSS WERE FOUND.

## Aircraft

- Registration: [N5468C](https://openairdocs.org/deregistered/N5468C-2014-12-22), registration cancelled 2014-12-22, S/N 19502, built 1950 (OpenAirDocs)
- Reported make and model: CESSNA 170A
- Registry model: [Cessna 170A](https://openairdocs.org/model/cessna-170a) (registry code 2072304) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 19502
- Engines: CONTINENTAL O-300-A 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Bruce A. Rasmussen
- Registered owner: Unknown
- Departed: FAI, FAIRBANKS, AK
- Destination: MRI, ANCHORAGE, AK
- Flight plan: VFR
- Airport: NONE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial, flight instructor; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 1,300 total, 650 in this make and model, 1,300 as pilot in command, 100 in the last 90 days, 100 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 30 knots
- Visibility: 3 statute miles
- Lowest ceiling: none
- Temperature: 10 °F, dew point -0 °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 19901107049269A](https://openairdocs.org/incident/19901107049269A), Nov 7, 1990: Cessna 170A, Healy, AK, Substantial damage. Engine stopped en route. Crash landed on tundra. Pilot beleived water in fuel froze and unable to drain on preflight

## Other investigations on N5468C (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 MKC77DTK08](https://openairdocs.org/ntsb/MKC77DTK08), Feb 18, 1977: Cessna 170A (N5468C), Lemmon, SD, 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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