# NTSB DEN82FA018: Cessna T210N, N6520Y, 28 Mi Ene Ogden, UT, January 16, 1982

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: January 15, 1982, 18:57 local (Jan 16, 1982, 01:57 UTC)
- Place: 28 Mi Ene Ogden, UT
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report January 15, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 69637
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82FA018
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/69637/pdf
- Page: https://openairdocs.org/ntsb/DEN82FA018

## Sequence of events

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

- Loss of control - in flight, climb - to cruise
  - reason for occurrence undetermined (cause)
  - weather condition - downdraft (contributing factor)
  - weather condition - turbulence (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

DURING AN IFR FLT AT 12,000 FT THE PLT CONTACTED ATC & REQUESTED A HIGHER ALTITUDE TO GET OUT OF IMC. HE WAS CLEARED TO CLIMB & MAINTAIN 14,000 FT. THE PLT ACKNOWLEDGED THE CLEARANCE AT 1855 & WAS NOT HEARD FROM AGAIN. RADAR CONTACT WAS LOST AT 1859. APPROXIMATELY 1 HR EARLIER DURING THE FLT THE PLT WAS ADVISED OF A SIGMET THAT INCLUDED MODERATE TO SEVERE TURBULENCE BELOW 18,000 FT WITH STRONG UPDRAFTS & DOWNDRAFTS. EXAMINATION OF ATC'S ITAP REVEALED THAT THE ACFT'S GROUND SPEED DECREASED FROM 110 TO 70K AT APPROXIMATELY THE TIME THE PLT RECEIVED HIS CLEARANCE TO CLIMB TO 14,000 FT. SHORTLY THEREAFTER GROUND SPEED INCREASED TO 90K. IN ADDITION TO THE GROUND SPEED DEVIATION FOLLOWING THE PLT'S ACKNOWLEDGEMENT OF THE ALTITUDE CHANGE, THE ACFT CHANGED HEADING ABOUT 90 DEG TO THE RIGHT OF THE ORIGINAL WESTERLY COURSE. THE ACFT CONTINUED ON THIS NORTHERLY COURSE UNTIL RADAR CONTACT WAS LOST. THE PLT DID NOT REPORT ANY PROBLEMS TO ARTCC DURING THE TIME OF THE COURSE CHANGE OR GROUND SPEED DEVIATION.

## Aircraft

- Registration: [N6520Y](https://openairdocs.org/deregistered/N6520Y-2013-07-10), registration cancelled 2013-07-10, S/N 21064418, built 1981 (OpenAirDocs)
- Reported make and model: CESSNA T210N
- 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: 2164418
- Engines: CONTINENTAL TSIO-520-R 310 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Rocco D. Bills
- Registered owner: Rocco D. Bills
- Departed: C, GILLETTE, WY
- Destination: C, SALT LAKE CITY, UT
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; flight hours: 2,000 total, 250 in this make and model, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 2° at 7 knots
- Visibility: 25 statute miles
- Lowest ceiling: 5,500 ft broken
- Temperature: 93 °F
- Altimeter: 30.00 inHg

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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