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Last updated: 21 September 2019
Status:Final
Date:Thursday 2 July 1998
Time:11:49
Type:Silhouette image of generic F900 model; specific model in this crash may look slightly different
Dassault Falcon 900
Operator:TAG Aviation USA
Registration: N900CS
C/n / msn: 104
First flight:
Total airframe hrs:3119
Crew:Fatalities: 0 / Occupants: 3
Passengers:Fatalities: 0 / Occupants: 6
Total:Fatalities: 0 / Occupants: 9
Aircraft damage: Substantial
Aircraft fate: Repaired
Location:Hamilton Airport, MT (   United States of America)
Phase: Landing (LDG)
Nature:Private
Departure airport:San Francisco International Airport, CA (SFO/KSFO), United States of America
Destination airport:Hamilton-Ravalli County Airport, MT, United States of America
Narrative:
A Dassault Falcon 900, N900CS, veered off the side of the runway at Hamilton, Montana, and collided with VASI lights during the landing roll. Visual meteorological conditions prevailed at the time. The aircraft was substantially damaged. The two airline transport pilots, the one flight attendant and the six passengers were not injured. The flight had departed from San Francisco, California, about one-hour and forty minutes prior to the accident.
The pilot reported that a normal visual approach was accomplished to runway 34. The pilot stated that the aircraft touched down about 200 feet from the threshold. The pilot stated that, as the aircraft slowed to approximately 60 to 70 knots, the aircraft veered to the right and exited the side of the runway. Directional control was regained after the aircraft exited the runway. Before the aircraft came to a stop, the right wing collided with the VASI lights for runway 16, damaging the leading edge high-lift device and the extended flap.

Probable Cause:

PROBABLE CAUSE: "Partial failure of the anti-skid brake system due to contamination."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 8 months
Accident number: SEA98LA118
Download report: Summary report

Classification:
Runway excursion

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Map
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 San Francisco International Airport, CA to Hamilton-Ravalli County Airport, MT as the crow flies is 1168 km (730 miles).

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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