B-17E Flying Fortress

The Boeing B-17E Flying Fortress, introduced in early 1941, was the first production version of the iconic four‑engine heavy bomber that would dominate the United States Army Air Forces’ strategic bombing campaign in World War II. Developed from the prototype YB‑17 and the earlier B‑17C/D models, the E variant incorporated a stronger airframe, increased defensive armament, and a fully enclosed nose turret. It carried up to 4,500 pounds of bombs over a range of roughly 2,000 miles, while a crew of ten operated a suite of .50‑caliber machine guns spread across waist, ball, and tail positions, providing unprecedented firepower for its era. The B‑17E saw its first combat in the Pacific and later in the European theater, where it endured intense enemy fighter attacks and anti‑aircraft fire, proving the durability that earned the “Flying Fortress” nickname. Its rugged construction and ability to return many damaged aircraft safely to base set a new standard for survivability. The E model also introduced the innovative Norden bombing computer, enhancing precision bombing. By shaping tactics, crew coordination, and bomber design, the B‑17E left a lasting legacy that influenced post‑war heavy bombers and cemented Boeing’s reputation as a premier military aircraft manufacturer.

Boeing

B-17E Flying Fortress

Classification

Production & History

Design & Classification