# NTSB ANC83LA158: de Havilland DHC-2, MK-1, N5147G, Barrow, AK, September 1, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 1, 1983, 14:15 local (22:15 UTC)
- Place: Barrow, AK
- Coordinates: 71.279472, -156.779556 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=71.2795&lon=-156.7796&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4161
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC83LA158
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4161/pdf
- Page: https://openairdocs.org/ntsb/ANC83LA158

## Sequence of events

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

- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - snow covered (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - not identified, pilot in command (cause)
  - information insufficient, pilot in command (cause)
  - terrain condition - hidden obstruction(s) (contributing factor)
  - terrain condition - ditch (contributing factor)
- Main gear collapsed, landing - roll
  - landing gear,nose gear assembly - overload (contributing factor)

## Analysis

THE ACFT COLLIDED WITH A DITCH DURING LANDING. THE SANDBAR USED FOR LANDING HAD A LIGHT COVERING OF SNOW AND A DITCH WASOBSCURED BY THE SNOW. DURING LANDING ROLLOUT THE ACFT COLLIDED WITH THE DITCH AND ONE OF THE MAIN LANDING GEAR COLLAPSED. NO MECHANICAL MALFUNCTIONS WERE INVOLVED IN THIS ACCIDENT.

## Aircraft

- Registration: [N5147G](https://openairdocs.org/aircraft/N5147G), registered now, S/N 350, built 1951 (OpenAirDocs)
- Reported make and model: de Havilland DHC-2, MK-1 (DHC-2, MK-)
- Registry model: [Dehavilland BEAVER DHC-2 MK.1](https://openairdocs.org/model/dehavilland-beaver-dhc-2-mk-1) (registry code 2800102) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 373FM187L
- Airframe hours: 7138
- Engines: P&W R985-AN14B reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Cape Smythe Air Service, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, September 27, 1982, 79 hours before
- Departed: BRW, BARROW, AK
- Flight plan: VFR
- Airport: UMT, Umiat

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; airline transport; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 5,448 total, 38 in this make and model, 5,053 as pilot in command, 209 in the last 90 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 8 knots, gusting 15
- Visibility: 10 statute miles
- Lowest ceiling: 1,500 ft broken
- Temperature: 25 °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 19830901049129A](https://openairdocs.org/incident/19830901049129A), Sep 1, 1983: Dhav DHC2MK1, Chandler River, AK, Substantial damage. Aircraft was landed on sandbar and during rollout left gear hit ditch and sheared off.

## Other investigations on N5147G (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 ANC90LA098](https://openairdocs.org/ntsb/ANC90LA098), Jun 27, 1990: De Havilland DHC-2 (N5147G), Caribou Lake, AK, substantial damage. Probable cause: A POWER LOSS CAUSED BY THE FAILURE OF A PISTON CYLINDER.

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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