# NTSB DEN90LA026: Cessna T210L, N843YT, Gillette, WY, November 22, 1989

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: November 22, 1989, 09:00 local (16:00 UTC)
- Place: Gillette, WY
- Location: 44.2726° N, 105.4989° W: Placed by OpenAirDocs: center of Gillette, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.2726&lon=-105.4989&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report June 25, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 17870
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN90LA026
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17870/pdf
- Page: https://openairdocs.org/ntsb/DEN90LA026

## Probable cause

FORCED LANDING IN UNSUITABLE TERRAIN AS A RESULT OF AN ENGINE CRANKSHAFT FAILURE AT LOW LEVEL CRUISE FLIGHT.

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise
  - engine assembly,crankshaft - failure,total (cause)
- Forced landing, descent - emergency
  - terrain condition - none suitable (contributing factor)
  - wheels up landing - intentional, pilot in command (contributing factor)
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - high vegetation

## Aircraft

- Registration: [N843YT](https://openairdocs.org/aircraft/N843YT), registered now, S/N 21063334, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA T210L
- Registry model: [Cessna T210N](https://openairdocs.org/model/cessna-t210n) (registry code 2073456) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21060416
- Airframe hours: 5216
- Engines: CONTINENTAL TSIO-520-R9 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Other work use, Part 91
- Registered owner: True Oil Co.
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, November 16, 1989, 16 hours before
- Departed: CPR, CASPER, WY
- Destination: GLL, GILLETTE, WY
- Flight plan: Company VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 11,300 total, 3,500 in this make and model, 11,000 as pilot in command, 139 in the last 90 days, 35 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 10 knots, gusting 15
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 55 °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 19891122047249A](https://openairdocs.org/incident/19891122047249A), Nov 22, 1989: Cessna T210L, Gillette, WY, Substantial damage. Lost power patrolling pipeline. Landed gear up in sage brush. Slid into ditch. Main bearing shift broke crankshaft.

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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