description: The P-61 was built during the last couple of years of WWII, and was built to be the Army Air Forces purpose built night fighter. The P-61 was a revolutionary aircraft, being one of the few aircraft of WWII with RADAR. The P-61 had a crew of 3- Pilot, Gunner and Radar Operator. With 2 Pratt and Whitney R-2800's, 4 - 50 caliber machine guns and 4 - 20MM cannons in the turrets, it was a very powerful Allied weapon of WWII. As big as a bomber, as agile as a light plane, this night fighting specialist destroyed hundreds of Axis aircraft during night raids. Enjoy reading all of our rare aviation manuals and documents online. This AAF training manual will give the history of the aircraft and walk you through all systems and operations; They are an absolute must see. Usage: AviationShoppe.com provides these items freely for historical and reference use.