# NTSB ANC83FA175: Stinson 108-2, N291C, Skwentna, AK, September 17, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: September 17, 1983, 09:30 local (17:30 UTC)
- Place: Skwentna, AK
- Coordinates: 61.930683, -151.730865 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.9307&lon=-151.7309&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4059
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC83FA175
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4059/pdf
- Page: https://openairdocs.org/ntsb/ANC83FA175

## Analysis

THE ACFT NOSE OVER AFTER LANDING ON A SAND BAR. THE USABLE LANDING AREA WAS ABOUT 700 FT LONG & CONSISTED OF A SOFT MIXTURE OF SAND & GRAVEL.

## Sequence of events

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

- Nose over, landing - roll
  - terrain condition - sand bar (contributing factor)
  - terrain condition - soft (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)

## Aircraft

- Registration: [N291C](https://openairdocs.org/aircraft/N291C), registered now, S/N 108-3291, built 1947 (OpenAirDocs)
- Reported make and model: STINSON 108-2
- Registry model: [Stinson 108-2](https://openairdocs.org/model/stinson-108-2) (registry code 9230406) (OpenAirDocs)
- Registry engine: [Franklin 6A4165 series](https://openairdocs.org/engine/franklin-6a4165-series) (registry code 27025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 3291
- Airframe hours: 1330
- Engines: FRANKLIN 6A4-165-B3 165 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Duane Edwin Mathes
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 25, 1983, 75 hours before
- Departed: MRI, ANCHORAGE, AK
- Destination: TKA, TALKEETNA, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, expired; seat: left; flight hours: 695 total, 278 in this make and model, 580 as pilot in command, 18 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 55 °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 19830917049439A](https://openairdocs.org/incident/19830917049439A), Sep 17, 1983: Univar 1082, Skwentna, AK, Substantial damage. Landed on a soft river sandbar. Flipped over trying to avoid a cut bank in the sand. Area not suitable for landing.

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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