The Aviation Diary
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Boulder is an active public-use airport serving Boulder, Montana, United States.
Airport directory
Boulder (3U9) is a public-use airport in Boulder, MT.
Airport reference data is maintained from approved aviation sources and reviewed through The Aviation Diary data-governance workflow.
Boulder is an active public-use airport serving Boulder, Montana, United States.
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Every August 19, the United States honors the pioneers who made flight possible. National Aviation Day 2026 falls on the 155th anniversary of Orville Wright's birth — a look back at the 12 seconds that started it all, and where aviation goes next.
Read Story →Twenty years after the EA-18G Growler first flight from St. Louis in August 2006, Boeing's electronic attack jet is still being rebuilt for a fight over the electromagnetic spectrum.
Read Story →The U.S. Army has selected the Robinson R66 as the training helicopter for its new Flight School Next program, replacing the UH-72 Lakota at Fort Rucker under a contractor-run model that could be worth up to $10 billion over 26 years.
Read Story →Airport Operations
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