# NTSB ANC89LA035: Cessna 150, N6414K, Big Lake, AK, January 16, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 16, 1989, 14:15 local (18:15 UTC)
- Place: Big Lake, AK
- Location: 61.5450° N, 149.8180° W: Placed by OpenAirDocs: center of Big Lake, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=61.5450&lon=-149.8180&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 28, 1990
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5160
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC89LA035
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5160/pdf
- Page: https://openairdocs.org/ntsb/ANC89LA035

## Probable cause

THE STUDENT PILOT'S FAILURE TO FOLLOW PROCEDURES DURING THE SIMULATED FORCED LANDING. CONTRIBUTING TO THE ACCIDENT WERE THE EXTREME TEMPERATURES.

## Sequence of events

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

- Loss of engine power, maneuvering
  - weather condition - temperature extremes
  - reason for occurrence undetermined (cause)
- In flight collision with terrain/water, descent - emergency
  - object - tree(s)

## Analysis

THE STUDENT PILOT WAS SIMULATING A FORCED LANDING TO A FROZEN LAKE WHEN A LOSS OF POWER WAS EXPERIENCED. THE ACFT CRASHED INTO A WOODED AREA DURING THE APCH. THE OUTSIDE AIR TEMPERATURE WAS 15 DEG BELOW ZERO. THE STUDENT PLT STATED THAT THE ENGINE SHOULD HAVE BEEN KEPT AT A HIGHER RPM DURING THE SIMULATED FORCED LANDING TO PREVENT CARB ICE.

## Aircraft

- Registration: [N6414K](https://openairdocs.org/aircraft/N6414K), registered now, S/N 15077690, built 1975 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150M](https://openairdocs.org/model/cessna-150m) (registry code 2071830) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15077690
- Airframe hours: 6564
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Richard Ardaiz
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, November 11, 1988, 81 hours before
- Departed: MRI, ANCHORAGE, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; student; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 96 total, 51 in this make and model, 6 as pilot in command, 11 in the last 90 days, 2 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 7 °F, dew point 16 °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 19890116000599A](https://openairdocs.org/incident/19890116000599A), Jan 16, 1989: Cessna 150M, Big Lake, AK, Substantial damage. Engine quit on a go around from a simulated forced landing. Struck trees. Pilot blamed carburetor icing.

## Other investigations on N6414K (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 ANC01LA025](https://openairdocs.org/ntsb/ANC01LA025), Dec 17, 2000: Cessna 150M (N6414K), Anchorage, AK, substantial damage. Probable cause: The delayed remedial action by the pilot/instructor of another airplane during landing. Factors in the accident were the failure of the pilot of another airplane to maintain directional control, and…

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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