Lockheed P-3 Orion
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The Lockheed P-3 Orion is a four-engined, turboprop anti-submarine and maritime surveillance aircraft developed for the United States Navy and introduced in the 1960s. Wikipedia
Developed into: Lockheed P-7
First flight: November 1959
Introduction: August 1962
Manufacturer: Lockheed; Lockheed Martin; Kawasaki Aerospace Company
Number built: Lockheed – 650, Kawasaki – 107, Total – 757
Produced: 1961–1990
Role: Maritime patrol aircraft