Boeing YB-40 Flying Fortress Boeing YB-40 Flying Fortress The Boeing YB-40 Flying Fortress was a modification for operational testing purposes of the B-17 Flying Fortress bomber aircraft, converted to act as a heavily armed gunship for other bombers during World War II. At the time of its development, long-range fighter aircraft such as the North American P-51 Mustang were just entering quantity production, and thus were not yet available to accompany bombers all the way from England to Germany and back. Work on the prototype, Project V-139, began in September 1942 by converting the second production B-17F-1-BO (serial number 41-24341) built. Conversion work was
The Pink Lady (aircraft) The Pink Lady (aircraft) The Pink Lady is the nickname of a B-17G Flying Fortress bomber. Until retirement early in 2010, it was the only flying survivor to have seen action in Europe during World War II. Rolled out of the Lockheed-Vega production facility in Burbank, California in December, 1944, "The Pink Lady" was then only known as a B-17G-85-VE Fortress, serial number 44-8846. On March 1, 1945, 44-8846 was flown to RAF Polebrook, England, and assigned to the 511th Bomb Squadron, 351st Bomb Group. Since she entered active service so close to the end of the war, 44-8846 only