# NTSB DEN86LA148: Cessna 207, N92807, Frederick, CO, June 1, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 1, 1986, 17:00 local (23:00 UTC)
- Place: Frederick, CO
- Coordinates: 40.110279, -104.929222 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.1103&lon=-104.9292&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16971
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86LA148
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16971/pdf
- Page: https://openairdocs.org/ntsb/DEN86LA148

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, descent - normal
  - mixture - improper, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (cause)
- Forced landing, descent - emergency
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - dirt bank/rising embankment

## Analysis

ACCORDING TO THE PLT, HE HAD DESCENDED FROM 8,200 FT AGL TO 700 FT AGL IN PREPARATION FOR LANDING. THE PLT STATED THAT WHEN HE STARTED TO ADD POWER, HE NOTICED THE ENGINE HAD QUIT AND A FORCED LANDING WAS MADE. DURING THE INVESTIGATION, THE PLT DID NOT INDICATE HE HAD MADE ANY MIXTURE ADJUSTMENTS DURING THE DESCENT. THE ENGINE WAS TEST RUN AND FUNCTIONED NORMALLY.

## Aircraft

- Registration: N92807 (not matched to a registry record)
- Reported make and model: CESSNA 207
- Category: Airplane
- Serial number: 20700091
- Airframe hours: 2085
- Engines: CONTINENTAL TS10-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Ace, Inc.
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, February 1, 1986

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 2,087 total, 2 in this make and model, 1,950 as pilot in command, 7 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 10 knots, gusting 12
- Visibility: 20 statute miles
- Lowest ceiling: 8,200 ft broken
- Temperature: 64 °F
- Altimeter: 30.00 inHg

## 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 19860601020699A](https://openairdocs.org/incident/19860601020699A), Jun 1, 1986: Cessna 207, Frederick, CO, Substantial damage. Dropped chutists, made steep spiraling descent, engine quit due to failure to enrichen mixture. Forced landing.

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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