# NTSB DEN86FA163: Beech C90A, N114CM, Jackson, WY, June 16, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: June 16, 1986, 15:00 local (21:00 UTC)
- Place: Jackson, WY
- Coordinates: 43.469291, -110.759307 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.4693&lon=-110.7593&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16829
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86FA163
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16829/pdf
- Page: https://openairdocs.org/ntsb/DEN86FA163

## Sequence of events

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

- In flight collision with terrain/water, descent
  - aircraft handling - improper, pilot in command (cause)
  - proper altitude - not maintained, pilot in command (cause)
  - inattentive, pilot in command (contributing factor)
  - fatigue(lack of sleep), pilot in command (cause)
  - terrain condition - mountainous/hilly

## Analysis

THE PLT DEPARTED OLATHE, KS, EN ROUTE TO JACKSON, WY. THE PLT RADIOED THE DENVER EFAS AND REPORTED HIS POSITION AS 56 MILES NORTHWEST OF CASPER, WY. THERE WAS NO FURTHER RADIO COMMUNICATION WITH N114CM. THE PLT'S WIFE STATED AFTER THE ACCIDENT THAT THE PLT HAD A HABIT OF TAKING A 'CAT NAP' WHEN HE FLEW.

## Aircraft

- Registration: [N114CM](https://openairdocs.org/deregistered/N114CM-1995-01-17), registration cancelled 1995-01-17, S/N LJ709 (OpenAirDocs)
- Reported make and model: BEECH C90A
- Registry model: [Beech C90](https://openairdocs.org/model/beech-c90) (registry code 1152913) (OpenAirDocs)
- Category: Airplane
- Serial number: LJ-709
- Airframe hours: 3002
- Engines: P&W PT6A-21 550 horsepower turbo prop
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Charles V. Mcclaren
- Registered owner: John B. Mckee, Jr.
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, January 24, 1986, 98 hours before
- Departed: IXD, OLATHE, KS
- Destination: JAC
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 6,700 total, 500 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 10 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 82 °F, dew point 36 °F
- Altimeter: 30.00 inHg
- Observed at: JAC, 34 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 19860616025329A](https://openairdocs.org/incident/19860616025329A), Jun 16, 1986: Beech C90, Jackson, WY, Destroyed. The aircraft impacted the side of a mountain for unknown reasons. Suspect the pilot was asleep.

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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