# NTSB ANC82DA033: Cessna 206, N9938M, Near Nightmute, AK, April 9, 1982

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: April 9, 1982, 12:25 local (16:25 UTC)
- Place: Near Nightmute, AK
- Coordinates: 60.490501, -164.810607 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.4905&lon=-164.8106&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report April 9, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 71902
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC82DA033
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71902/pdf
- Page: https://openairdocs.org/ntsb/ANC82DA033

## Analysis

THE PILOT STATED THAT DURING FLIGHT THE AIRCRAFT INADVERTENTLY DRIFTED NORTH OF HIS INTENDED FLIGHT PATH INTO AN AREA OF HIGHER TERRAIN. WHEN THE AIRCRAFT ENCOUNTERED A WHITEOUT CONDITION THE PILOT ELECTED TO TURN TO THE RIGHT TOWARD WHAT HE OBSERVED AS BETTER VISIBILITIES RATHER THAN TOWARDS LOWER TERRAIN. THE AIRCRAFT STRUCK A SNOW COVERED SLOPE IN LEVEL FLIGHT.

## Sequence of events

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

- In flight encounter with weather, cruise - normal
  - weather condition - whiteout (contributing factor)
  - vfr flight into imc - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, maneuvering - turn to reverse direction
  - in-flight planning/decision - improper, pilot in command (cause)

## Aircraft

- Registration: N9938M (not matched to a registry record)
- Reported make and model: CESSNA 206
- Category: Airplane
- Serial number: U2060588
- Airframe hours: 981
- Engines: CONTINENTAL IO-520-F9 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Western Yukon Air
- Registered owner: Lynwood Marshall
- Departed: BET, BETHEL, AK
- Destination: AK45, TANUNAK, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; medical: class 1, valid medical--w/ waivers/lim; flight hours: 5,683 total, 1,200 in this make and model, 4,689 as pilot in command, 102 in the last 90 days, 29 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 180° at 20 knots
- Lowest ceiling: 1,100 ft overcast
- Temperature: 86 °F

## 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 19820409008799A](https://openairdocs.org/incident/19820409008799A), Apr 9, 1982: Cessna 206CESSNA, Nightmute, AL, Substantial damage. Aircraft entered whiteout conditions at low altitude and flew into rising terrain.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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