# NTSB ANC84IA031: Cessna 207, N75738, Kotzebue, AK, January 14, 1984

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: January 14, 1984, 17:22 local (21:22 UTC)
- Place: Kotzebue, AK
- Coordinates: 67.239105, -161.189163 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=67.2391&lon=-161.1892&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4242
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC84IA031
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4242/pdf
- Page: https://openairdocs.org/ntsb/ANC84IA031

## 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, takeoff - initial climb
  - engine assembly,crankshaft - fatigue (cause)
  - inadequate quality control, manufacturer (contributing factor)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

THE PLT STATED THAT SHORTLY AFTER TAKEOFF THE ENG STARTED TO RUN ROUGH & THEN FAILED COMPLETELY. INVESTIGATION REVEALED THAT THE CRANKSHAFT HAD FAILED IN FATIQUE. LABORATORY TEST SHOWED A CORE HARDNESS BELOW THE MINIMUM SPECIFIED.

## Aircraft

- Registration: N75738 (not matched to a registry record)
- Reported make and model: CESSNA 207
- Category: Airplane
- Serial number: 20700641
- Airframe hours: 2428
- Engines: CONTINENTAL TSIO-520 300 horsepower reciprocating
- Damage: Minor damage
- Flight: Part 135
- Registered owner: Bering Air, Inc.
- Airworthiness certificate: Standard, Utility
- Departed: OTZ, KOTZEBUE, AK
- Destination: ORV, NOORVIK, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; commercial, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,855 total, 225 in this make and model, 4,747 as pilot in command, 280 in the last 90 days, 100 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 80° at 10 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 18 °F, dew point 10 °F
- Altimeter: 30.00 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).

- [Incident 19840114022549I](https://openairdocs.org/incident/19840114022549I), Jan 14, 1984: Cessna T207A, Kotzebue, AK, Minor damage. Engine quit on climbout. Landed on tundra off airport. Crankshaft failed due to fatigue. Cargo shifted on impact.

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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