# NTSB ANC86FA116: Stinson 108-2, N942D, Willow, AK, July 28, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: July 27, 1986, 22:15 local (Jul 28, 1986, 06:15 UTC)
- Place: Willow, AK
- Coordinates: 61.889553, -149.72969 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.8896&lon=-149.7297&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4602
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC86FA116
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4602/pdf
- Page: https://openairdocs.org/ntsb/ANC86FA116

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, cruise - normal
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
  - precautionary landing - delayed, pilot in command (contributing factor)
  - remedial action - not attained, pilot in command
- In flight collision with object, approach
  - light condition - dusk (contributing factor)
  - terrain condition - none suitable (contributing factor)
  - object - tree(s) (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

ABOUT 5 TO 10 MIN PRIOR TO THE ACDNT, SVRL WITNESSES IN THE VICINITY OF THE WILLOW ARPT SAW THE ACFT HEADED SOUTHBOUND. THEY RPRTD THE ENG WAS RUNNING ROUGH, BUT THEY SAW NO SMOKE OR FIRE. APRX 3 MI FURTHER SOUTH, OTHER WITNESSES SAW THE ACFT MAKE A 180 DEG TURN BACK TWD THE ARPT. THEY RPRTD THE ENG WAS RUNNING ROUGH & THEY BELIEVED BLACK SMOKE WAS TRAIL- ING FROM THE LOWER ENG AREA. AS THE ACFT CONTD TWD THE ARPT, OTHERS HEARD &/OR SAW THE ACFT. SOME RPRTD THE ENG WAS RUNNING VERY ROUGH. OTHERS CLOSER TO THE ARPT SAW NO SMOKE & SVRL THOUGHT THE ENG WAS NOT RUNNING. ONE WITNESS NEAR THE ARPT STATED THE AIRSPEED WAS SLOW JUST BEFORE THE ACFT HIT TREES AT THE EDGE OF A WOODED AREA. THE ACFT CRASHED & BURNED APRX 1600 FT FROM THE APCH END OF RWY 31. AN EXAM OF THE WRECKAGE & A TEARDOWN OF THE ENG WERE MADE, BUT NO PREIMPACT MECHANICAL MALFUNCTION OR FAILURE WAS VERIFIED. HOWEVER, THE ACFT WAS EXTENSIVELY DAMAGED BY IMPACTED & FIRE.

## Aircraft

- Registration: [N942D](https://openairdocs.org/deregistered/N942D-2017-06-01), registration cancelled 2017-06-01, S/N 108-2942, 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: [Lycoming 0-435](https://openairdocs.org/engine/lycoming-0-435) (registry code 41516, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 108-2942
- Engines: CONTINENTAL O-470-K 230 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Registered owner: Ervin R. Hobbs
- Airworthiness certificate: Standard, Normal; Standard, Utility
- Last inspection: Annual, March 8, 1986
- Departed: Z22
- Destination: ANC, ANCHORAGE, AK
- Airport: Z22, Willow, runway 31, 4,600 × 105 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; military, commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 13,000 total, 1,000 in this make and model

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 61 °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 19860727036449A](https://openairdocs.org/incident/19860727036449A), Jul 27, 1986: Univar STC108, Willow, AK, Destroyed, 1 fatal. Suspect engine fire en route. During emergency approach, aircraft struck trees. Exact source of fire undetermined.

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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