Pratt & Whitney’s Boeing 747SP Test Bed Aircraft to Appear at Oshkosh 2025

EAA AirVenture Oshkosh 2025, the world’s premier aviation event, will host a rare treat for attendees. The Boeing 747SP test bed aircraft from RTX subsidiary Pratt & Whitney is set to make an appearance.

This iconic aircraft will take center stage at Boeing Plaza during the 72nd annual fly-in convention, held July 21-27 at Wittman Regional Airport in Oshkosh, Wisconsin.

The aircraft’s appearance celebrates Pratt & Whitney’s 100th anniversary, marking a century of aviation innovation since its founding in 1925.

Appearance at Oshkosh 2025


The 747SP arrives on July 20 and departs July 24, giving aviation enthusiasts a unique chance to explore this specialized aircraft up close.

Known as a flying test bed, it plays a critical role in developing cutting-edge propulsion technologies. Visitors can expect an unforgettable experience as they witness a piece of aviation history.

Photo Credit: EAA

Pratt & Whitney Centennial

“Pratt & Whitney’s legacy spans general, commercial, and military aviation,” said Rick Larsen, EAA’s vice president of communities and member programs, who oversees AirVenture’s attractions. “Displaying the 747SP at Oshkosh celebrates 100 years of their groundbreaking work, thrilling the over 500,000 attendees expected at the show.”

Since its start in 1925, Pratt & Whitney has shaped aviation. Its R-1340 Wasp engine transformed military and commercial flight. During the 1940s, the company powered key World War II aircraft and began exploring jet propulsion.

Today, it continues to innovate, with the 747SP testing engines like the PW800 for business jets and the advanced GTF engine for commercial fleets.

Maria Della Posta, president of Pratt & Whitney Canada, emphasized the significance of the event. “Showcasing our 747SP at Oshkosh highlights our commitment to pushing aviation’s boundaries,” she said.

“This aircraft has been vital in testing our latest propulsion technologies. As a long-time AirVenture exhibitor, we cherish connecting with pilots, operators, and enthusiasts who share our passion for flight.”

Photo Credit: Gilbert Hechema (GFDL 1.2 or GFDL 1.2), via Wikimedia Commons

15 Year Presence at Oshkosh

Pratt & Whitney Canada, established in 1928, has been a fixture at EAA AirVenture for over 15 years. Its legendary PT6 engine, in service for more than 60 years, powers thousands of aircraft worldwide, from bush planes to business jets.

With over 500 million flying hours, the PT6 remains a gold standard for reliability and performance in turboprop propulsion.

Boeing 747SP “Special Performance” Variant

The Boeing 747SP, or “special performance” model, is a rare variant of the iconic 747 airliner. Built for extended range, it’s powered by four Pratt & Whitney JT9D engines.

Only 45 were ever made, and Pratt & Whitney owns the last two airworthy examples. The test bed version features a unique fifth engine mount, allowing engineers to test engines in real-world conditions. Since 2001, these test beds have conducted over 1,400 ground and flight tests with 71 experimental engines.

Conclusion


Beyond the 747SP, Pratt & Whitney’s presence at AirVenture includes a booth in Exhibit Hangar B.

Visitors can explore PT6 engine cutaways and discover Collins Aerospace technologies throughout the week. This display underscores the company’s ongoing contributions to aviation.

EAA AirVenture Oshkosh 2025 promises to be a must-see event, blending history, innovation, and hands-on experiences.

Pratt & Whitney’s 747SP and exhibits offer a rare glimpse into the future of flight, making it a highlight for aviation fans worldwide.

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