# NTSB ANC82FA081: de Havilland DHC-3, N41755, Near Skwentna, AK, September 1, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: August 31, 1982, 17:30 local (Sep 1, 1982, 01:30 UTC)
- Place: Near Skwentna, AK
- Coordinates: 61.930824, -151.729888 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.9308&lon=-151.7299&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report August 31, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 71930
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC82FA081
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71930/pdf
- Page: https://openairdocs.org/ntsb/ANC82FA081

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - engine assembly,connecting rod - failure,total (cause)
  - engine assembly,connecting rod - separation (cause)
- Forced landing, landing - flare/touchdown
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - sand bar (contributing factor)
- Main gear collapsed, landing - roll
  - landing gear,main gear - overload

## Analysis

THE ACFT EXPERIENCED A POWER LOSS & A FORCED LANDING WAS MADE ON A SANDBAR. DURING THE LANDING ROLL THE ACFT STRUCK A LOG, FOLDING THE MAIN GEAR. ENG TEARDOWN REVEALED A FAILED NO.4 ARTICULATING ROD. THE ROD SEPARATED JUST ABOVE THE KNUCKLE PIN AREA.

## Aircraft

- Registration: [N41755](https://openairdocs.org/deregistered/N41755-2006-01-24), registration cancelled 2006-01-24, S/N 339, built 1959 (OpenAirDocs)
- Reported make and model: de Havilland DHC-3
- Registry model: [Dehavilland DHC-3](https://openairdocs.org/model/dehavilland-dhc-3) (registry code 2800202) (OpenAirDocs)
- Registry engine: [Pratt & Whitney W-S1H&S3H](https://openairdocs.org/engine/pratt-whitney-w-s1h-s3h) (registry code 52012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 339
- Airframe hours: 6754
- Engines: P & W R-1340-AN2 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Woods Air Service
- Registered owner: Warren W. Woods
- Departed: KUSKOKWIM RIVER, AK
- Destination: PAQ, PALMER, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; flight instructor, airline transport; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 6,600 total, 30 in this make and model, 6,369 as pilot in command, 114 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 60 statute miles

## 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 19820831043029A](https://openairdocs.org/incident/19820831043029A), Aug 31, 1982: Dhav DHC3, Skwentna, AK, Substantial damage. Crash occurred when aircraft struck log during emergency landing on sandbar after engine failure.

## Other investigations on N41755 (2)

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 ANC92LA109](https://openairdocs.org/ntsb/ANC92LA109), Jul 22, 1992: De Havilland DHC-3 (N41755), Mcgrath, AK, substantial damage. Probable cause: THE FIRE IN THE ENGINE ACCESSORY DRIVE ASSEMBLY. FACTOR WAS THE ROUGH AN UNEVEN FORCED LANDING AREA.
- [NTSB ANC89IA099](https://openairdocs.org/ntsb/ANC89IA099), Jun 20, 1989: De Havilland DHC-3 (N41755), Palmer, AK, incident, no damage. Probable cause: INADEQUATE LUBRICATION WHICH RESULTED IN THE FAILURE OF THE HORIZONTAL STABILIZER'S TRIM ACTUATOR.

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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