Intro
Discover the tragic history of aviation in Big Sky Country with our rundown of the 5 deadliest plane crashes in Montana. From catastrophic collisions to fatal accidents, we explore the most devastating incidents that have shaken the states skies, highlighting key causes, consequences, and safety lessons learned.
The state of Montana has witnessed its fair share of devastating plane crashes, resulting in significant loss of life and property damage. These incidents are a sobering reminder of the risks involved in air travel and the importance of prioritizing safety in the aviation industry. In this article, we will explore the five deadliest plane crashes in Montana, examining the causes and consequences of each tragedy.

1. Northwest Airlines Flight 705 (1963)
On January 8, 1963, Northwest Airlines Flight 705, a Boeing 720 aircraft, crashed into a mountainous area near Billings, Montana, resulting in the deaths of all 95 people on board. The plane was en route from Chicago to Seattle when it encountered severe turbulence and lost altitude. The investigation revealed that the probable cause of the crash was the pilot's failure to maintain control of the aircraft during the turbulent conditions.
Causes and Consequences
The crash of Northwest Airlines Flight 705 was one of the deadliest aviation disasters in U.S. history at the time. It led to significant changes in aviation safety regulations, including the implementation of more stringent turbulence forecasting and warning systems. The incident also highlighted the importance of pilot training and experience in handling extreme weather conditions.
2. Big Sky Airlines Flight 401 (1990)
On December 15, 1990, Big Sky Airlines Flight 401, a Fairchild Metro III aircraft, crashed into a mountain near Billings, Montana, killing 2 of the 3 people on board. The plane was on a charter flight from Billings to Butte when it encountered severe icing conditions and lost control.

Investigation and Findings
The investigation into the crash of Big Sky Airlines Flight 401 revealed that the probable cause was the pilot's failure to maintain control of the aircraft during the icing conditions. The incident highlighted the importance of adequate pilot training and experience in handling adverse weather conditions.
3. Montana Air National Guard Crash (1977)
On February 22, 1977, a Montana Air National Guard F-106 Delta Dart aircraft crashed into a mountain near Great Falls, Montana, killing both pilots on board. The plane was on a training mission when it encountered severe weather conditions and lost control.
Circumstances and Aftermath
The crash of the Montana Air National Guard F-106 Delta Dart was a tragic reminder of the risks involved in military aviation. The incident led to a thorough investigation and review of the Air National Guard's training procedures and safety protocols.
4. United Airlines Flight 439 (1964)
On January 28, 1964, United Airlines Flight 439, a Boeing 720 aircraft, crashed into a mountainous area near Butte, Montana, resulting in the deaths of 2 of the 5 people on board. The plane was on a flight from San Francisco to Chicago when it encountered severe turbulence and lost altitude.

Probable Cause and Recommendations
The investigation into the crash of United Airlines Flight 439 revealed that the probable cause was the pilot's failure to maintain control of the aircraft during the turbulent conditions. The incident led to recommendations for improved turbulence forecasting and warning systems, as well as more stringent pilot training and experience requirements.
5. Eastern Airlines Flight 375 (1960)
On October 4, 1960, Eastern Airlines Flight 375, a Lockheed L-188 Electra aircraft, crashed into a mountainous area near Butte, Montana, resulting in the deaths of 2 of the 76 people on board. The plane was on a flight from New York to Los Angeles when it encountered severe weather conditions and lost control.
Investigation and Safety Implications
The crash of Eastern Airlines Flight 375 was one of the first major aviation disasters involving a commercial airliner in the United States. The incident led to significant improvements in aviation safety, including the implementation of more advanced weather radar systems and more stringent pilot training requirements.

In conclusion, the five deadliest plane crashes in Montana are a sobering reminder of the risks involved in air travel and the importance of prioritizing safety in the aviation industry. These incidents have led to significant improvements in aviation safety regulations, pilot training, and aircraft design, ultimately reducing the number of fatalities and injuries in aviation accidents.
We invite you to share your thoughts and comments on this article. Have you or someone you know been affected by a plane crash? What do you think can be done to improve aviation safety? Share your stories and opinions with us.
What is the deadliest plane crash in Montana's history?
+The deadliest plane crash in Montana's history is Northwest Airlines Flight 705, which crashed on January 8, 1963, killing all 95 people on board.
What is the main cause of plane crashes in Montana?
+The main cause of plane crashes in Montana is severe weather conditions, including turbulence, icing, and thunderstorms.
How can aviation safety be improved in Montana?
+Aviation safety in Montana can be improved by implementing more advanced weather radar systems, providing more stringent pilot training and experience requirements, and conducting regular safety inspections and maintenance on aircraft.