# NTSB ANC91FA017: Piper PA-31-350, N4082H, Evanston, WY, December 18, 1990

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: December 18, 1990, 11:30 local (18:30 UTC)
- Place: Evanston, WY
- Coordinates: 41.250137, -110.959617 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.2501&lon=-110.9596&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report December 14, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5475
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC91FA017
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5475/pdf
- Page: https://openairdocs.org/ntsb/ANC91FA017

## Probable cause

THE PILOT'S PREMATURE DESCENT. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S FATIGUE AND POOR WEATHER.

## Sequence of events

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

- In flight collision with terrain/water, approach
  - descent - premature, pilot in command (cause)
  - fatigue, pilot in command (contributing factor)
  - weather condition - obscuration (contributing factor)
  - weather condition - turbulence (contributing factor)

## Analysis

THE AIR TAXI CARGO PILOT CRASHED ON A MOUNTAINSIDE, ABOUT 7 MILES FROM THE AIRPORT, WHILE ON A VOR-DME INSTRUMENT APPROACH. VARIABLE LOW CEILINGS AND VISIBILITY HAD PREVAILED ON THE DAY OF THE ACCIDENT. THE PILOT HAD HAD THE FLU FOR THE PRECEEDING 2 WEEEKS AND WAS STILL TAKING MEDICATION.

## Aircraft

- Registration: [N4082H](https://openairdocs.org/deregistered/N4082H-1993-05-13), registration cancelled 1993-05-13, S/N 318152087 (OpenAirDocs)
- Reported make and model: PIPER PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (registry code 7103110) (OpenAirDocs)
- Category: Airplane
- Serial number: 31-8152087
- Engines: LYCOMING TIO-540-J2BD 350 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Part 135
- Operator: Alpine Aviation, doing business as Alpine Air
- Registered owner: James A Lundrerg
- Departed: RKS, ROCK SPRINGS, WY
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; flight instructor, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 2,001 total, 671 in this make and model, 1,728 as pilot in command, 273 in the last 90 days, 89 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 240° at 22 knots
- Visibility: 1 statute miles
- Lowest ceiling: 400 ft
- Temperature: 25 °F, dew point 25 °F
- Altimeter: 29.00 inHg
- Observed at: EVW, 7 nm away

## 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 19901218055149A](https://openairdocs.org/incident/19901218055149A), Dec 18, 1990: Piper PA31350, Evanston, WY, Destroyed, 1 fatal. Flew into hillside on IFR approach in heavy tubulence and near zero IMC. Descended below mda.

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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