Aviation’s Defining Moments: Revisiting December 17’s Legacy

From the Wright Flyer to the DC-3 and the birth of the EAA, the date recalls many historic milestones.

Meg Godlewski

Wednesday, December 17, 2025 at 02:00 PM ET

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Meg Godlewski

The original 1903 Wright Flyer [Credit: Library of Congress]

Key Takeaways:

December 17 is a pivotal date in aviation, marking the Wright brothers' first successful powered flight in 1903, which evolved to demonstrate practical air travel by 1905.
The Douglas DST (later DC-3) made its inaugural flight on December 17, 1935, pioneering long-range sleeper travel, establishing numerous airline routes, and remaining a testament to resilient aircraft design.
The concept of experimental aviation, initiated by the Wright brothers, eventually led to the founding of the Experimental Aircraft Association (EAA) in 1953, following the increased availability of materials post-WWII.

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December 17 should be a day of celebration, and some might argue that’s thanks to those involved in the aviation world. Many historic milestones were reached on this day, starting with the Wright brothers’ first successful powered flight.

Orville and Wilbur Wright, bicycle mechanics from Ohio, had been experimenting with kites and then gliders for years. On December 17, 1903, the propellers on the Wright Flyer turned, powered by a 4-cycle 12 hp engine, and the aircraft took off from a track and flew for “12 seconds that changed the world.”