Thunder Over Michigan at Willow Run and the bomber plant runway where Rosie the Riveter built Liberators by the thousands

Thunder Over Michigan, held annually at Willow Run Airport in Ypsilanti, Michigan, is more than an airshow. It’s a living connection to the runway where the Ford Willow Run Bomber Plant once produced a B-24 Liberator every 55 minutes at peak output — making it the most historically significant airshow venue in the United States.

What Makes Thunder Over Michigan Different From Every Other Airshow?

The answer is beneath your feet. During World War II, this site housed the largest factory under one roof on the planet. The Ford Willow Run Bomber Plant mass-produced four-engine B-24 heavy bombers on an assembly line so long it crossed a county boundary. Engineers reportedly put a curve in the line to avoid paying taxes in two counties.

The Yankee Air Museum sits on the field and serves as the heart of the event. Inside its hangar, visitors can walk up to a B-17 Flying Fortress named Yankee Lady, inspect the bomb bay, and touch aluminum skin held together by rivets that were each driven by hand. Volunteer docents with over a decade of experience lead tours and share crew histories.

The Static Display and the People Behind It

The ramp at Willow Run fills with warbirds: P-51 Mustangs, F4U Corsairs, an FM-2 Hellcat with wings folded, and multiple B-25 Mitchell variants. Radial engines bark to life across the tarmac hours before the flying program begins.

But the static display’s real power comes from the people standing next to the aircraft. Families with direct ties to the bomber plant show up every year. Visitors whose grandmothers were among the original Rosie the Riveters — women who skinned B-24 fuselages from 1943 to 1945 — stand on the same concrete where those bombers rolled out, pointing at preserved Liberators and saying, that’s the same thing she built.

The connection between the metal and the people who made it is what sets this event apart.

The Restoration Shop You Shouldn’t Miss

On the south end of the ramp, behind the main display area, an open hangar door leads to a working restoration shop. Inside, aircraft in various stages of rebuild include a Corsair with its engine suspended from a chain hoist, an AT-6 Texan receiving new fabric on its control surfaces, and a P-40 Warhawk that hasn’t flown since 1944.

The Warhawk restoration has been underway for nine years, with roughly two more to go. The aircraft’s original Army Air Corps logbook survives and is handled with extraordinary care. When asked why anyone would spend a decade on a single airplane, the restorer’s answer was simple: because she deserves to fly again.

The Flying Program

The aerial performances build throughout the afternoon. Highlights include:

A P-51 Mustang in bare metal finish making low passes at roughly 50 feet, the Rolls-Royce Merlin engine delivering its unmistakable full-power scream
A Heritage Flight pairing an F-16 Viper with the P-51 in tight formation — the contrast between the Viper’s smooth whistle and the Mustang’s growl underscoring decades of fighter evolution
A Tora Tora Tora reenactment with replica Japanese aircraft and runway pyrotechnics large enough to rattle car alarms in the parking lot
The grand finale: a B-25 Mitchell with two P-51 escorts coming in low and fast down the runway, the Mustangs breaking left and right in symmetry after the pass

Planning Your Visit as a Pilot

Thunder Over Michigan typically runs in August. Willow Run Airport opens for fly-in arrivals during the show, with the Yankee Air Museum coordinating ramp parking. Fuel is available on the field.

The approach is straightforward — flat Michigan terrain with no obstacles. Pilots should watch for the Temporary Flight Restriction (TFR) and the NOTAM establishing the aerobatic box during show hours.

Why Willow Run Almost Didn’t Survive

Twenty years ago, Willow Run Airport nearly fell to commercial development. The local community and the Yankee Air Museum fought to preserve it. That effort succeeded, and every summer the field roars back to life with the aircraft and the history that make this ground sacred to aviation.

The runway exists because Henry Ford built the arsenal of democracy here. Landing on it carries a weight that no other airshow venue can replicate.

Key Takeaways

Thunder Over Michigan is held annually in August at Willow Run Airport (KYIP) in Ypsilanti, Michigan, on the site of the WWII Ford Bomber Plant
The Ford Willow Run plant produced B-24 Liberators at a rate of one per hour, making it the largest factory under one roof during the war
The Yankee Air Museum anchors the event with restored warbirds, historical archives, and an active restoration shop
Fly-in access is available during the show with fuel and ramp parking — watch for the TFR and aerobatic NOTAM
The show’s real distinction is its living connection to the people who built, flew, and maintained these aircraft