# NTSB ANC92LA043: Douglas DC-6B, N151, Selawik, AK, March 3, 1992

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: March 3, 1992, 18:20 local (22:20 UTC)
- Place: Selawik, AK
- Coordinates: 66.590629, -160.019561 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=66.5906&lon=-160.0196&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed, report May 26, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5696
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC92LA043
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5696/pdf
- Page: https://openairdocs.org/ntsb/ANC92LA043

## Probable cause

THE PILOT'S INADEQUATE PRE FLIGHT PLANNING AND DISREGARDING THE AIRCRAFT PERFORMANCE DATA.  CONTRIBUTING FACTORS WERE THE EXTREME OUTSIDE AIR TEMPERATURES, THE ICY RUNWAY, AND THE TAILWIND.

## Sequence of events

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

- Overrun, landing - roll
  - terrain condition - icy (contributing factor)
  - performance data - disregarded, pilot in command (cause)
  - weather condition - temperature extremes (contributing factor)
  - preflight planning/preparation - inadequate, pilot in command (cause)
  - weather condition - tailwind (contributing factor)

## Analysis

THE HEAVILY LOADED FUEL TANKER LANDED WITH AN APPROXIMATE 3 KNOT TAILWIND, OVER RAN THE DEPARTURE END OF THE RUNWAY, AND CAME TO A STOP ON A FROZEN RIVER.  THE LAST TWO THIRDS OF THE 3,150 FT LONG GRAVEL RUNWAY WAS COVERED WITH ICE. THE CREW STATED THAT THE PROPELLERS EITHER FAILED TO GO INTO REVERSE, OR WERE SLOW IN REVERSING, TO ASSIST IN STOPPING. EXAMINATION REVEALED THAT ALL PROPELLER BLADES WERE IN THE REVERSED POSITION.  OUTSIDE AIR TEMPERATURE WAS MINUS 30 TO MINUS 35 DEGREES F. THE AIRPLANE PERFORMANCE CHART USED TO CALCULATE THE LANDING DISTANCE WAS FOR 'CONCRETE RUNWAYS'. STOPPING DISTANCE WAS NOT PREDICATED ON THE USE OF REVERSE PROPELLER THRUST.  POST ACCIDENT CALCULATIONS, USING THE SAME CHART, FOUND THE ESTIMATED LANDING DISTANCE NEEDED FOR THE ACCIDENT FLIGHT TO BE 100 TO 200 FT MORE THAN THE LENGTH OF THE RUNWAY.

## Aircraft

- Registration: [N151](https://openairdocs.org/deregistered/N151-1996-08-30), registration cancelled 1996-08-30, S/N 45174 (OpenAirDocs)
- Reported make and model: DOUGLAS DC-6B
- Registry model: [Douglas DC-6B](https://openairdocs.org/model/douglas-dc-6b) (registry code 3021712) (OpenAirDocs)
- Category: Airplane
- Serial number: 45174
- Airframe hours: 33232
- Engines: P&W R2800 2400 horsepower reciprocating
- Damage: Substantial damage
- Fire: On-Ground
- Flight: Part 125
- Operator: Everts, Cliff, doing business as Everts Air Fuel, Inc.
- Registered owner: Everts, Cliff
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, February 11, 1992, 44 hours before
- Departed: FAI, FAIRBANKS, AK
- Flight plan: Company VFR
- Airport: WLK, Selawik, runway 27, 3,150 × 100 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; flight engineer, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 6,800 total, 5,600 in this make and model, 5,430 as pilot in command, 41 in the last 90 days, 20 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 3 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: -35 °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).

- [Accident 19920303005009A](https://openairdocs.org/incident/19920303005009A), Mar 3, 1992: Doug DC6B, Selawik, AK, Substantial damage. Overran ice and snow covered runway. Factors light downwind. Short runway for type. Props slow to reverse at minus 32

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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