# NTSB ANC83LA024: de Havilland DHC-2, N94DC, Near Port Alswo, AK, December 18, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 18, 1982, 12:00 local (16:00 UTC)
- Place: Near Port Alswo, AK
- Coordinates: 60.199645, -154.280502 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.1996&lon=-154.2805&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed, report December 18, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 71914
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC83LA024
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71914/pdf
- Page: https://openairdocs.org/ntsb/ANC83LA024

## Analysis

WHILE LANDING ON THE 3,500 FT LEVEL OF TUXEDNI GLACIER THE ACFT SKIS SANK IN DEEP SOFT SNOW & THE ACFT FLIPPED OVER.

## Sequence of events

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

- Nose over, landing - roll
  - terrain condition - snow covered (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
- Main gear collapsed, landing - roll
  - landing gear,main gear attachment - overload (contributing factor)

## Aircraft

- Registration: [N94DC](https://openairdocs.org/aircraft/N94DC), registered now, S/N 238, built 1951 (OpenAirDocs)
- Reported make and model: de Havilland DHC-2
- Registry model: [Dehavilland DHC-2 MK 1](https://openairdocs.org/model/dehavilland-dhc-2-mk-1) (registry code 2808006) (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: 238
- Airframe hours: 6
- Engines: P & W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Alvin D. Carrell
- Registered owner: Alvin D. Carrell
- Departed: C, LAKE HOOD SEAPL, AK
- Destination: PORT ALSWORTH, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 13,010 total, 10,000 in this make and model, 1,310 as pilot in command, 500 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 60 statute miles
- Lowest ceiling: 7,000 ft broken
- Temperature: 95 °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 19821218064979A](https://openairdocs.org/incident/19821218064979A), Dec 18, 1982: Dhav DHC2*, Port Alsworth, AK, Substantial damage. After touchdown and during landing roll out, right ski sank into deep snow and aircraft flipped inverted.

## Other investigations on N94DC (2)

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.

- [NTSB ANC19LA028](https://openairdocs.org/ntsb/ANC19LA028), Jun 27, 2019: De Havilland DHC-2 (N94DC), Ketchikan, AK, substantial damage. Probable cause: A loss of directional control while landing, which resulted in a water loop.
- [NTSB ANC99LA007](https://openairdocs.org/ntsb/ANC99LA007), Oct 18, 1998: de Havilland DHC-2 (N94DC), Chitina, AK, substantial damage. Probable cause: The pilot's inadequate preflight which failed to detect water contamination in the fuel system. A factor was the unsuitable terrain in the emergency landing area.

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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