# NTSB ANC85LA043: Cessna U206G, N410WR, Unalakleet, AK, January 31, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 31, 1985, 13:12 local (17:12 UTC)
- Place: Unalakleet, AK
- Coordinates: 64.090499, -160.360885 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=64.0905&lon=-160.3609&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (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): 4463
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC85LA043
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4463/pdf
- Page: https://openairdocs.org/ntsb/ANC85LA043

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - aircraft preflight - inadequate, pilot in command (cause)
  - removal of control/gust lock(s) - not performed, pilot in command (cause)
  - directional control - not possible, pilot in command
- On ground/water encounter with terrain/water, takeoff - roll/run
  - airport facilities,runway/landing area condition - snowbank

## Analysis

ACFT VEERED TO THE LEFT AND CONTACTED A SNOWBANK DURING THE TAKEOFF GROUND ROLL. INSPECTION REVEALED PLT FAILED TO REMOVE THE RUDDER GUST LOCK BEFORE TAKEOFF WAS ATTEMPTED.

## Aircraft

- Registration: N410WR (not matched to a registry record)
- Reported make and model: CESSNA U206G
- Category: Airplane
- Serial number: 04472
- Airframe hours: 5021
- Engines: CONTINENTAL IO-520 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Ryan Air Service, Inc.
- Airworthiness certificate: Standard, Utility
- Last inspection: 100 hour, December 1, 1984, 21 hours before
- Departed: UNK, UNALAKLEET, AK
- Destination: SKI, SHAKTOOLIK, AK
- Flight plan: VFR
- Airport: UNK, Unalakleet, runway 32, 6,000 × 170 ft, snow

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 4,200 total, 600 in this make and model, 4,200 as pilot in command, 90 in the last 90 days, 45 in the last 30 days, 15 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 210° at 5 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 36 °F, dew point 30 °F
- Altimeter: 27.00 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 19850131002779A](https://openairdocs.org/incident/19850131002779A), Jan 31, 1985: Cessna U206G, Unalakleet, AK, Substantial damage. Lost control after aborting takeoff due to failure to remove a rudder gust lock. Ran off the runway and overturned.

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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