# NTSB DEN91FA042: Cessna U206, N8014Z, Yampa, CO, February 12, 1991

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: February 11, 1991, 17:26 local (Feb 12, 1991, 00:26 UTC)
- Place: Yampa, CO
- Coordinates: 40.149631, -106.899139 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.1496&lon=-106.8991&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 4 fatal
- Status: Completed, report March 31, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18013
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN91FA042
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18013/pdf
- Page: https://openairdocs.org/ntsb/DEN91FA042

## Probable cause

INADVERTENT ACCELERATED STALL BY THE PILOT IN COMMAND WHILE ATTEMPTING A TURN IN CLOSE PROXIMITY TO TERRAIN. A FACTOR WAS THE HIGH ALTITUDE.

## Sequence of events

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

- In flight collision with terrain/water, maneuvering - turn to reverse direction
  - weather condition - high density altitude (contributing factor)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with object, descent - uncontrolled
  - object - tree(s)

## Analysis

WHILE FLYING PASSENGERS TO VIEW SOME MOUNTAIN PROPERTY FOR POTENTIAL PURCHASE, THE PILOT ATTEMPTED A TURN AT 10,600 FEET MSL AND APPROXIMATELY 100 FEET ABOVE MOUNTAINOUS TERRAIN.  THE AIRCRAFT ENTERED AN ACCELERATED STALL AND IMPACTED ON THE SIDE OF A MOUNTAIN INTO A PINE FOREST.  THE ELT ACTIVATED; HOWEVER, DUE TO MOUNTAIN REFLECTION OF THE SIGNAL, THE CRASH WAS NOT LOCATED FOR APPROXIMATELY 20 HOURS.

## Aircraft

- Registration: [N8014Z](https://openairdocs.org/deregistered/N8014Z-1993-04-30), registration cancelled 1993-04-30, S/N U2060414 (OpenAirDocs)
- Reported make and model: CESSNA U206
- Registry model: [Cessna U206](https://openairdocs.org/model/cessna-u206) (registry code 2073306) (OpenAirDocs)
- Category: Airplane
- Serial number: U206-0414
- Engines: CONTINENTAL IO-520-A 285 horsepower reciprocating
- Damage: Destroyed
- Flight: Business, Part 91
- Operator: Dls Contractors, Inc.
- Registered owner: Dls Contractors, Inc.
- Departed: EGE, EAGLE, CO

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; toxicology performed; flight hours: 587 total, 443 in this make and model, 412 as pilot in command, 53 in the last 90 days, 16 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: EGE, 30 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 19910211003629A](https://openairdocs.org/incident/19910211003629A), Feb 11, 1991: Cessna U206, Yampa, CO, Destroyed, 4 fatal. Struck trees on rising terrain near mountain top. No indication mechanical or weather problems. Impact at 10600 MSL

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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