# NTSB ANC85LA073: Cessna 206, N4863C, Seward, AK, April 26, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 26, 1985, 10:00 local (14:00 UTC)
- Place: Seward, AK
- Coordinates: 60.050086, -149.329437 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.0501&lon=-149.3294&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4485
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC85LA073
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4485/pdf
- Page: https://openairdocs.org/ntsb/ANC85LA073

## 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
  - engine assembly,camshaft - failure,total (cause)
  - maintenance,lubrication - improper, manufacturer (cause)
  - engine assembly,bearing - failure,total (cause)
  - engine assembly,cylinder - failure,total (cause)
- In flight collision with terrain/water, descent - emergency

## Analysis

THE PLT STATED THE ACFT WAS IN CRUISE FLT WHEN THE ENGINE QUIT. THE PLT ATTEMPTED AN EMERGENCY LANDING ON THE BEACH BUT CRASHED IN THE WATER. THE ACFT ENGINE WAS NOT LOCATED FOR SEVERAL DAYS AFTER THE ACCIDENT. ACCORDING TO THE OPERATOR THE ENGINE FAILURE WAS DUE TO A BROKEN CRANK SHAFT.SALT WATER DAMAGE PRECLUDED AN ANALYSIS OF THE SHAFT FAILURE.

## Aircraft

- Registration: [N4863C](https://openairdocs.org/deregistered/N4863C-1989-01-26), registration cancelled 1989-01-26, S/N U20603856 (OpenAirDocs)
- Reported make and model: CESSNA 206
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs)
- Category: Airplane
- Serial number: U20603856
- Airframe hours: 4361
- Engines: CONTINENTAL IO-520 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: John Foode, doing business as Chitina Air Service
- Registered owner: Chitina Air Service
- Airworthiness certificate: Standard, Utility
- Last inspection: 100 hour, March 9, 1985, 13 hours before
- Departed: CDV, CORDOVA, AK
- Destination: PORT GRAHAM, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 24; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 4,136 total, 1,000 in this make and model, 4,000 as pilot in command, 80 in the last 90 days, 40 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 15 knots, gusting 20
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 43 °F, dew point 10 °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 19850426015869A](https://openairdocs.org/incident/19850426015869A), Apr 26, 1985: Cessna U206G, Seward, AK, Substantial damage. Engine ran rough and seized up. Aircraft was landed in water. Cargo lost,occupants waded ashore. Broken crankshaft.

## Other investigations on N4863C (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 ANC85LA004](https://openairdocs.org/ntsb/ANC85LA004), Oct 14, 1984: Cessna U206 (N4863C), Hinchinbrook, AK, substantial damage

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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