Today in Aviation History: First Flight of the Bell P-39 Airacobra

While the Bell P-39 Airacobra often receives criticism for its poor performance at higher altitudes, it found a vital role in World War II, particularly in low-altitude combat. Initially designed for the United States Army Air Corps, the P-39 featured a unique rear-engine configuration that gave it a distinctive appearance.

Austin Hancock
Austin Hancock
Frank Parker testing out P-39F 41-2175 with air under her wings for the first time since her forced landing during WWII. The aircraft has been under restoration at Pioneer Aero Ltd. for Jerry Yagen's Military Aviation Museum over the past few years. (photo by Gavin Conroy)
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On April 6, 1939, the Bell P-39 Airacobra made its first flight, marking the 86th anniversary of this unique aircraft’s debut. Initially designed for the United States Army Air Corps, the P-39 was one of the earliest fighters in the American arsenal as World War II began. The Airacobra was a single-seat fighter with an unconventional design. Powered by the Allison V-1710-85 V-12 liquid-cooled engine, the engine was mounted behind the pilot, with a long shaft connecting it to the propeller at the aircraft’s nose. This rear-engine layout gave the P-39 a distinctive, almost futuristic appearance, characteristic of 1930s aviation design trends.

Bell XP 39 showing the position of the supercharger air intake
Bell XP-39 showing the position of the supercharger air intake

The P-39 Airacobra was primarily intended as a low-altitude fighter. However, it was generally unpopular with American pilots, who criticized it for instability and poor performance, particularly at higher altitudes. The aircraft’s shortcomings were famously captured in the song “Give Me Operations.” Despite the P-39’s poor reception among U.S. aviators, the Soviet Union found it to be highly effective in combat. Soviet forces appreciated the P-39’s versatility in ground-attack roles, such as striking tanks, troops, and engaging in low-level dogfights on the Eastern Front. Under the Soviet Air Force, the Bell P-39 achieved more kills than any other U.S. fighter type flown by an Allied air force in combat—though it’s worth noting that Soviet claims were sometimes inflated.

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This amazing Bell P39 was located at the bottom of Lake Mart-Yavr within the Russian Arctic Circle in the summer of 2004

The P-39’s firepower was one of its key strengths. It was equipped with a 37mm M4 cannon mounted in the nose, complemented by two .50 caliber Browning M2 machine guns in the nose and two additional M2 .50s in the wings. The aircraft could also carry up to 500 pounds of bombs on its wings and centerline. The P-39 had a top speed of 389 miles per hour and a range of 525 nautical miles.

Bell P 39 Airacobra firing all weapons at night
Bell P-39 Airacobra firing all weapons at night. (U.S. Air Force photo)

Today, three Bell P-39s still fly in the United States, with many others preserved in museums worldwide. Though not the most effective fighter at high altitudes, the Airacobra excelled in low-altitude combat, carving out a respected place in aviation and World War II history. The outcome of the war might have been quite different without the P-39’s contributions.

John Cyrier flying P 39 Old Crow 12 July 2022
John Cyrier flying P-39 Old Crow on July 12, 2022. Photo via CAF
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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.
2 Comments
  • You overlook the nose gear, probably the first ones fitted on a single seater combat aircraft. It too was a cause of dislike as it was deemed to be a traiing wheel and unmanly. I can bet it was an easy aircraft to take of and land. The mid engine placement meant the nose needed weight for correct centre of gravity and the nose gear was obvious choice. Thanks for a good article.

  • Do you know where there’s one in qld Australia ?

    Atherton tableland.

    Staging area for US forces WWII.

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