Today in Aviation History: First Flight of the Vultee P-66 Vanguard

On September 8, 1939, the Vultee P-66 Vanguard made its first flight. Designed for Sweden but retained by the U.S., the fighter was later sent to China under Lend-Lease. Although it saw limited combat, the P-66 remains a unique and intriguing aircraft in aviation history.

Austin Hancock
Austin Hancock
Vultee P-66 in flight. The production version with traditional radial engine cowling. (U.S. Air Force photo)
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On September 8, 1939—86 years ago today—the Vultee Model 61, the prototype for the Vultee P-66 Vanguard, made its first flight. The P-66 was a single-engine fighter originally designed and built by Vultee for service with Sweden, where it was designated the V-48C. When the first Vanguards were ready for delivery in 1941, the U.S. government blocked their export. The aircraft were instead re-designated as P-66s and retained in the United States for national defense and training purposes.

NX21755 at Burbank in 1939
NX21755 at Burbank in 1939

As World War II progressed, export of the P-66 was eventually permitted. Great Britain initially ordered 100 P-66s for use as advanced trainers. However, after initial flight trials, the British rejected the Vanguard I and passed the aircraft—along with four U.S. Army Air Corps P-66s—on to China under the Lend-Lease Act. The P-66s arrived in China via India in late 1942, but many were damaged during transit or lost during testing.

Vultee P 66 Vanguard Karachi 1942
Vultee P-66 Vanguards. These planes were originally built for Sweden but were seized by the USAAF and all but 15 were sent to China under the Lend-Lease program. The 15 kept by the USAAF were used as advanced trainers. The photo was taken when the aircraft was at Karachi Airfield in India on October 25, 1942. Image via Wikipedia

Chinese Vanguards bore U.S. Air Force insignias and serial numbers, along with markings of the Chinese Nationalist Air Force. Ultimately, only 12 aircraft were deemed airworthy and assigned to the 74th Fighter Squadron of the 23rd Fighter Group based at Kunming. These aircraft saw limited action, and the operational record of the P-66 in China remains sparse.

Vultee P 66 Vanguard

The Vultee P-66 was powered by a Pratt & Whitney R-1830-33 14-cylinder radial engine producing 1,200 horsepower. The fighter could reach a maximum speed of 340 mph, cruise at 290 mph, and had a range of 740 nautical miles with a service ceiling of 28,200 feet. Its armament consisted of four .30-caliber and two .50-caliber machine guns. Between 1940 and 1942, Vultee built a total of 146 P-66s. Though the Vanguard saw little combat success, it remains a fascinating aircraft for historians and enthusiasts alike, notable for its design and the complex international journey of its service history.

Vultee P 66 Vanguard 1
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Commercial Pilot, CFI, and Museum Entrepreneur, with a subject focus on WWII Aviation. I am dedicated to building flight experience so I can fly WWII Fighters, such as the P-51 Mustang, for museums and airshows, and in the USAF Heritage Flight. I lead and run the Pennington Flight Memorial, to honor local MIA Tuskegee Airman F/O Leland “Sticky” Pennington.