# NTSB DEN82FA016: Cessna 210, N9763X, Helena, MT, January 7, 1982

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: January 7, 1982, 00:15 local (07:15 UTC)
- Place: Helena, MT
- Coordinates: 46.530776, -112.209304 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.5308&lon=-112.2093&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report January 7, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71004
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82FA016
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71004/pdf
- Page: https://openairdocs.org/ntsb/DEN82FA016

## Sequence of events

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

- In flight collision with terrain/water, cruise - normal
  - light condition - night (contributing factor)
  - terrain condition - mountainous/hilly (contributing factor)
  - terrain condition - snow covered (contributing factor)
  - terrain condition - high terrain (contributing factor)
  - proper altitude - not maintained, pilot in command (cause)
  - terrain condition - rising (contributing factor)

## Analysis

THE AIRCRAFT CRASHED INTO A MOUNTAIN AT THE 9300 FOOT LEVEL. THE PILOT WAS ON COURSE FOR HIS DESTINATION. THE MINIMUM OBSTACLE CLEARANCE ALTITUDE FOR HIS LOCATION WAS 10,800 FEET. WEATHER WAS NOT A PROBLEM BUT THE ACCIDENT DID OCCUR DURING HOURS OF DARKNESS. THE AIRCRAFT WAS IN LEVEL CRUISE WHEN THE ACCIDENT HAPPENED.

## Aircraft

- Registration: [N9763X](https://openairdocs.org/deregistered/N9763X-1983-03-23), registration cancelled 1983-03-23, S/N 21058063 (OpenAirDocs)
- Reported make and model: CESSNA 210
- Registry model: [Cessna 210B](https://openairdocs.org/model/cessna-210b) (registry code 2073410) (OpenAirDocs)
- Category: Airplane
- Serial number: 21058063
- Airframe hours: 3790
- Engines: CONTINENTAL IO-470S 260 horsepower reciprocating
- Damage: Destroyed
- Flight: Part 135
- Operator: Robert R. Hylton
- Registered owner: Robert R. Hylton
- Departed: HELENA, MT
- Destination: BILLINGS, MT
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 29; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 5,131 total, 55 in this make and model, 210 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: calm
- Visibility: 20 statute miles
- Temperature: 48 °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 19820107000659A](https://openairdocs.org/incident/19820107000659A), Jan 7, 1982: Cessna 210, Helena, MT, Destroyed. Flew into the side of a snow-covered mountain while en route at night. Was approximately 1500 feet below moca.

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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