five Y1B-9A service test aircraft (Boeing Model 246) had the Pratt & Whitney R-1860-11 Hornet B engines which powered the re-engined YB-9 and Y1B-9 and...

faster than the Y1B-17. When testing was completed, the Y1B-17A was reconfigured as a B-17A. Wikimedia Commons has media related to Boeing B-17B. The B-17B...

Flying Fortress List of Boeing B-17 Flying Fortress variants Boeing Y1B-20 Boeing B-29 Superfortress Boeing KB-29 Superfortress Boeing XB-39 Superfortress...

Retrieved: 9 January 2007. "Boeing Y1B-17". Archived 16 May 2007 at the Wayback Machine National Museum of the United States Air Force. Retrieved: 9 January...

260 lb (1,025 kg) Aircraft of comparable role, configuration, and era Boeing Y1B-9 Tupolev SB Related lists List of bomber aircraft List of military aircraft...

began service testing the Boeing Y1B-9, the first American all-metal monoplane bomber aircraft design. The high speed of the Y1B-9A indicated that open cockpits...

XB-1 Douglas Y1B-7 Fokker XB-8 Boeing Y1B-9 Douglas YB-11 Martin XB-13 Martin XB-14 Boeing XB-15 Martin XB-16 Douglas XB-19 Boeing Y1B-20 North American...

was activated. In January 1936, the Air Corps contracted with Boeing for thirteen Y1B-17 Flying Fortress prototypes, enough to equip one squadron for...

Atlantic XB-8 Bellanca TES (1930 version) Berliner-Joyce P-16 Boeing XP-9 Boeing Y1B-9 Consolidated A-11 Consolidated P-30 Consolidated Y1P-25 Curtiss...

steam locomotive model Bensen B-9, a 1958 American small helicopter Boeing B-9 (sometimes referred to as the Y1B-9 or YB-9), a 1931 United States Army Air...

Aviation portal Aircraft of comparable role, configuration, and era Boeing XB-15 Boeing Y1B-20 Convair B-36 Related lists List of bomber aircraft List of aircraft...

then was given a leading role in the operational development of the Boeing Y1B-9 twin engine bombers which pioneered high altitude bombing techniques...

flight of a new bomber (a Y1B-17, a pre-production Boeing B-17 Flying Fortress prototype). Upon reaching 30,000 feet (9,100 m; 9.1 km), the bomber goes into...

“checklist”. 7 December 1936 First Y1B-17, 36-149, c/n 1973, first flown 2 December, makes rough landing at Boeing Field, Seattle, Washington, on third...

8 Boeing 9 Boeing 10 Boeing 11 Boeing 12 Boeing 13 Boeing 14 Boeing 15 Boeing 16 Boeing 17 Boeing 18 Boeing 19 Boeing 20 Boeing 21 Boeing 40 Boeing 41...

A-26 Invader (1942) Douglas A-33 (1941) Douglas A2D Skyshark (1950) Douglas Y1B-7, B-7, O-35 (1931) Douglas B-18 Bolo (1935) Douglas XB-19 (1941) Douglas...

Retired 90 Douglas B-18 Bolo medium bomber 1935 retired 1946 350 Douglas Y1B-7 heavy bomber 1931 retired prototype 8 Fokker XB-8 heavy bomber 1929 retired...

B-5 during period 1928–1932 In addition to B-6, c. 1931–1936, included Y1B-9 during period 1932–1936 Consolidated squadron In addition to B-10, B-17...

Project 0 Douglas XTB2D Skypirate US Torpedo bomber 1945 Prototype 2 Douglas Y1B-7 US Heavy bomber 1931 Prototype 8 EADS-CASA C295MP Spain Maritime patrol...

Curtiss B-2 Condor, Keystone B-4, Keystone B-6, Douglas Y1B-7 and YB-10 bombers; the Boeing P-12 and P-6E fighters; the Curtiss A-12 Shrike; Bellanca...

feet of water. 7 December First Boeing Y1B-17, 36–149, c/n 1973, first flown 2 December, makes rough landing at Boeing Field, Seattle, Washington, on third...

selecting flaps "up". This was the first fatality in the type. 18 December Boeing Y1B-17 Flying Fortress, 36–157, c/n 1981, formerly of the 2d Bomb Group, Langley...

contemporary, the Consolidated B-24 Liberator. The first pre-production Y1B-17 Fortress was delivered to the 2d Bombardment Group, Langley Field, Virginia...

radial engine. January 17 – The United States Army Air Corps orders 13 Boeing Y1B-17 Flying Fortresses, previously known by the manufacturer's designation...

involved in a P-12 mid-air collision over Hemet on 14 April 1933. 25 June Boeing Y1B-9A, 32-307, c/n 1675, '190', of the 49th Bombardment Squadron, departs...

Major General Oscar Westover, to substitute a single Boeing Y1B-20 (an advanced design of the Boeing B-15) for two B-15s ordered for Project A, the development...

DH-4 Squadrons in the morning, and Etain by the DH-4s in the afternoon. On 9 October 1918, it participated in one of the largest bombing raids of the war...

"23, of the army air corps reserves," is killed in the crash of Douglas Y1B-7, 32-309, in fog at night near Jerome, Idaho. Second Lieutenant James Y...

Boeing 747 Airborne Ballistic Laser (ABL) and now the F-35A Joint Strike Fighter. Combat Operations Combat in Central Pacific, 7 December 1941 – c. 9...