# NTSB ANC91IA039: Cessna U206G, N756XE, Sparrevohn Afs, AK, March 8, 1991

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: March 8, 1991, 14:30 local (18:30 UTC)
- Place: Sparrevohn Afs, AK
- Coordinates: 61.159812, -149.989959 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.1598&lon=-149.9900&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 31, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5496
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC91IA039
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5496/pdf
- Page: https://openairdocs.org/ntsb/ANC91IA039

## Probable cause

THE LOSS OF ENGINE POWER DUE TO THE ICE IN THE FUEL STRAINER/GASCALATOR. CONTRIBUTING WAS: THE INADEQUATE PREFLIGHT PREPARATION BY THE PILOT, AND UNSUITABLE TERRAIN ON WHICH TO MAKE THE 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
  - fuel system,strainer - blocked(total) (cause)
  - preflight planning/preparation - inadequate, pilot in command (contributing factor)
- Forced landing, descent - emergency
- In flight collision with terrain/water, descent - emergency
  - terrain condition - none suitable (contributing factor)

## Analysis

THE PILOT STATED THAT WHILE CRUISING AT 10,000 FEET MSL, THE ENGINE QUIT WITHOUT WARNING AND HE WAS UNABLE TO RESTART IT. A FORCED LANDING WAS MADE ON A MOUNTAINSIDE. AFTER REMOVING A LARGE PIECE OF ICE FROM THE GASCALATOR, AND MAKING SOME TEMPORARY REPAIRS, THE ENGINE STARTED AND RAN NORMALLY.

## Aircraft

- Registration: [N756XE](https://openairdocs.org/aircraft/N756XE), registered now, S/N U20604432, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA U206G
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: U20604432
- Airframe hours: 1498
- Engines: CONTINENTAL IO-520-F 300 horsepower reciprocating
- Damage: Minor damage
- Flight: Personal, Part 91
- Operator: Patrick J. Steward
- Registered owner: Steward & Co, Inc.
- Last inspection: Annual, April 12, 1990, 70 hours before
- Departed: Z41, ANCHORAGE, AK
- Destination: BET, BETHEL, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, valid medical--w/ waivers/lim; flight hours: 5,000 total, 2,500 in this make and model, 5,000 as pilot in command, 50 in the last 90 days, 25 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 15 knots, gusting 20
- Lowest ceiling: none
- Temperature: 1 °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).

- [Incident 19910308009399I](https://openairdocs.org/incident/19910308009399I), Mar 8, 1991: Cessna U206G, Sparevohn, AK, Minor damage. Engine lost power and aircraft landed on slope of a hill. Ice found in gascolator.

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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