# NTSB ANC90LA175: Cessna 206, N756JC, Puntilla Lake, AK, September 16, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 15, 1990, 17:30 local (Sep 16, 1990, 01:30 UTC)
- Place: Puntilla Lake, AK
- Coordinates: 62.449516, -149.790786 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=62.4495&lon=-149.7908&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 15, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5454
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90LA175
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5454/pdf
- Page: https://openairdocs.org/ntsb/ANC90LA175

## Probable cause

AN INADEQUATE PREFLIGHT.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, maneuvering
  - fuel system,line - contamination (cause)
  - aircraft preflight - improper, pilot in command (cause)
  - fuel system,tank - water (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - none suitable (contributing factor)

## Analysis

DURING CRUISE FLIGHT, THE ENGINE QUIT AND THE PILOT ELECTED TO LAND ON THE TUNDRA. THE PILOT-IN-COMMAND STATED THE FUEL PUMP FAILED DURING FLIGHT. EXAMINATION OF THE AIRPLANE'S FUEL SYSTEM AND BOTH ELECTRIC AND ENGINE DRIVEN FUEL PUMPS REVEALED NO MECHANICAL MALFUNCTION OR FAILURE. THE PILOT AND ONE PASSENGER WERE NOT INJURED. THE AIRPLANE WAS SUBSTANTIALLY DAMAGED. EXAMINATION OF THE AIRPLANE SHOWS SIGNS OF FUEL CONTAMINATION, I.E., WATER IN BOTH FUEL LINES AND TANKS.

## Aircraft

- Registration: [N756JC](https://openairdocs.org/aircraft/N756JC), registered now, S/N U20604119, built 1977 (OpenAirDocs)
- Reported make and model: CESSNA 206
- 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: U20604119
- Airframe hours: 1485
- Engines: CONTINENTAL IO-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Ed Stevenson
- Registered owner: Ed Stevenson
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, June 15, 1990, 25 hours before
- Departed: ANC, ANCHORAGE, AK
- Destination: FWL, FAREWELL, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; airline transport; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: front; flight hours: 11,500 total, 150 in this make and model, 9,500 as pilot in command, 25 in the last 90 days, 15 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 20 statute miles
- Lowest ceiling: 7,000 ft broken
- Temperature: 45 °F, dew point 37 °F
- Altimeter: 29.00 inHg

## 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 19900915039869A](https://openairdocs.org/incident/19900915039869A), Sep 15, 1990: Cessna U206G, Puntilla Lake, AK, Substantial damage. Lost fuel pressure and engine quit over an airport. Trying to land downwind, missed airport, pump circuit popped.

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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