# NTSB ANC88IA047: Cessna 207A, N73188, Takslesuk Lake, AK, April 14, 1988

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: April 14, 1988, 15:10 local (23:10 UTC)
- Place: Takslesuk Lake, AK
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 25, 1990
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4963
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC88IA047
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4963/pdf
- Page: https://openairdocs.org/ntsb/ANC88IA047

## 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
  - engine assembly,connecting rod - failure,total (cause)
- Forced landing, landing - roll
  - terrain condition - rough/uneven (contributing factor)
  - terrain condition - snow covered (contributing factor)
  - terrain condition - tundra (contributing factor)

## Analysis

THE SCHEDULED COMMUTER FLIGHT, FRIENDSHIP FLIGHT 305, WAS EN ROUTE FROM CHEVAK, ALASKA TO BETHEL, ALASKA. DURING CRUISE FLIGHT, THE AIRPLANE EXPERIENCED AN ENGINE FAILURE RESULTING A A FORCED LANDING ON ROUGH, SNOW COVERED TERRAIN. THE PILOT-IN-COMMAND STATED HE SAW A CONNECTING ROD RESTING IN THE BOTTOM OF THE ENGINE COWLING AND THE ENGINE CRANKCASE HAD A GAPING HOLE IN ITS SIDE.

## Aircraft

- Registration: [N73188](https://openairdocs.org/deregistered/N73188-2000-01-03), registration cancelled 2000-01-03, S/N 20700568, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA 207A
- Registry model: [Cessna 207A](https://openairdocs.org/model/cessna-207a) (registry code 2073605) (OpenAirDocs)
- Registry engine: [Continental IO-520-F](https://openairdocs.org/engine/continental-io-520-f) (registry code 17237, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 20700568
- Airframe hours: 5668
- Engines: CONTINENTAL IO-520-F11 300 horsepower reciprocating
- Damage: Minor damage
- Flight: Part 135
- Registered owner: Friendship Air Alaska Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, April 4, 1988, 31 hours before
- Departed: CHEVAK, AK
- Destination: BET, BETHEL, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: unknown, valid medical--no waivers/lim.; seat: left; flight hours: 3,500 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 11 knots
- Visibility: 40 statute miles
- Lowest ceiling: 4,500 ft broken
- Temperature: 39 °F, dew point 28 °F
- Altimeter: 29.00 inHg
- Observed at: BET

## 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 19880414012389I](https://openairdocs.org/incident/19880414012389I), Apr 14, 1988: Cessna 207A, Bethel, AK, Minor damage. Engine failed and oil on windshield. Nosed up in a snowbank on forced landing. Broken connecting rod. .

## Other investigations on N73188 (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 ANC99FA047](https://openairdocs.org/ntsb/ANC99FA047), Apr 14, 1999: Cessna 207A (N73188), Kotzebue, AK, destroyed, 1 fatal. Probable cause: The pilot's continued VFR flight into instrument meteorological conditions, spatial disorientation, and an inadvertent stall. Factors in the accident were weather conditions consisting of snow 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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