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Date:Tuesday 17 August 2004
Type:Silhouette image of generic BE99 model; specific model in this crash may look slightly different
Beechcraft 99 Airliner
Operator:Alpine Aviation
Registration: N199GL
MSN: U-15
First flight: 1968
Total airframe hrs:40521
Engines: 2 Pratt & Whitney Canada PT6A-27
Crew:Fatalities: 1 / Occupants: 1
Passengers:Fatalities: 1 / Occupants: 1
Total:Fatalities: 2 / Occupants: 2
Aircraft damage: Destroyed
Aircraft fate: Written off (damaged beyond repair)
Location:11 km (6.9 mls) NE of Neihart, MT (   United States of America)
Crash site elevation: 2767 m (9078 feet) amsl
Phase: En route (ENR)
Departure airport:Billings-Logan International Airport, MT (BIL/KBIL), United States of America
Destination airport:Kalispell-Glacier National Park Airport, MT (FCA/KFCA), United States of America
The airplane departed Billings at 23:05 carrying 2,665 pounds of mail on behalf of the U.S. Postal Service to Kalispell.
The airplane flew into the southern slope of Mt. Baldy in the middle of a large skree field approximately 150 feet below the summit, at an altitude of 9,079 feet amsl (2767 m).

Probable Cause:

PROBABLE CAUSE: "The pilot's failure to maintain adequate terrain clearance during cruise, which resulted in the in-flight collision with mountainous terrain. Dark night conditions and mountainous terrain were contributing factors."

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 2 months
Accident number: SEA04FA166
Download report: Summary report
Language: English

Controlled Flight Into Terrain (CFIT) - Mountain

» NTSB id. SEA04FA166


photo of Beechcraft-99-N199GL
accident date: 17-08-2004
type: Beechcraft 99
registration: N199GL

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Billings-Logan International Airport, MT to Kalispell-Glacier National Park Airport, MT as the crow flies is 511 km (319 miles).
Accident location: Exact; as reported in the official accident report.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Beech 99

  • 239 built
  • 45th loss
  • 24th fatal accident
  • 15th worst accident (at the time)
  • 18th worst accident (currently)
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