2012-03-07 01:27:07. [14] The most distinct mount was in the nose, which allowed the single machine gun to be fired toward nearly all frontal angles. M/SGT Michael Arooth shot down 17 enemy aircraft to reach triple "Ace" status. To enhance performance at slower speeds, the B-17B was altered to include larger rudders and flaps. info@nationalww2museum.org While the US had less than 200 at the start of the war, more than 12,000 B-17s were produced by the end and served in every theater. [6] But it was primarily employed by the USAAF in the daylight strategic bombing campaign over Europe, complementing RAF Bomber Command's night-time area bombing of German industrial, military and civilian targets. It was not until the advent of long-range fighter escorts (particularly the North American P-51 Mustang) and the resulting degradation of the Luftwaffe as an effective interceptor force between February and June 1944, that the B-17 became strategically potent. Though many were shot down, many more severely damaged aircraft were able to return their crews safely to base. The plane was pulled out of front-line service and used as a transport plane and even drones. The Soviets restored 23 to flying condition and concentrated them in the 890th bomber regiment of the 45th Bomber Aviation Division,[153] but they never saw combat. Tragically, the plane stalled and spun into the ground soon after takeoff, bursting into flames. By 1944, a further upgrade to Rheinmetall-Borsig's 30mm (1.2in) MK 108 cannons mounted either in the wing, or in underwing, conformal mount gun pods, was made for the Sturmbock Focke-Wulfs as either the /R2 or /R8 field modification kits, enabling aircraft to bring a bomber down with just a few hits.[103]. This type replaced the vulnerable twin-engine Zerstrer heavy fighters which could not survive interception by P-51 Mustangs flying well ahead of the combat boxes in an air supremacy role starting very early in 1944 to clear any Luftwaffe defensive fighters from the skies. Gift of Peggy Wallace, 2010.308.022, B-17 Flying Fortresses in formation over Europe, 1944-45. [69] Many B-17Gs were converted for other missions such as cargo hauling, engine testing, and reconnaissance. [130], B-17s were still used in the Pacific later in the war, however, mainly in the combat search and rescue role. [99], Since the airfield bombings were not appreciably reducing German fighter strength, additional B-17 groups were formed, and Eaker ordered major missions deeper into Germany against important industrial targets. In a 1943 Consolidated Aircraft poll of 2,500 men in cities where Consolidated advertisements had been run in newspapers, 73% had heard of the B-24 and 90% knew of the B-17. "The Battle of the Bismarck Sea", pp. The B-17's greatest success in the Pacific was in the Battle of the Bismarck Sea, in which aircraft of this type were responsible for damaging and sinking several Japanese transport ships. Regardless, the USAAC had been impressed by the prototype's performance, and on 17 January 1936, through a legal loophole,[27][28] the Air Corps ordered 13 YB-17s (designated Y1B-17 after November 1936 to denote its special F-1 funding) for service testing. The B-17 Flying Fortress became symbolic of the United States of America's air power. Fewer than 10 are airworthy . [20] While the air corps was still enthusiastic about the aircraft's potential, army officials were daunted by its cost;[24] Douglas quoted a unit price of $58,200 (equivalent to $916,000 in 2021) based on a production order of 220 aircraft, compared with $99,620 (equivalent to $1,568,000 in 2021 ) from Boeing. Date: American aircraft struck targets in Schweinfurt and Regensburg on August 17, 1943. . Swiss aircraft attempted to intercept and force individual aircraft to land, interning their crews; one Swiss pilot was killed, shot down by a U.S. bomber crew in September 1944. [28][31][note 2] In one of their first missions, three B-17s, directed by lead navigator Lieutenant Curtis LeMay, were sent by General Andrews to "intercept" and photograph the Italian ocean liner Rex 610 miles (980km) off the Atlantic coast. Yes, for instance, M/SGT Michael Arooth shot down 17 enemy aircraft to reach triple "Ace" status. It also developed a reputation for toughness based upon stories and photos of badly damaged B-17s safely returning to base. Its main use was in Europe, where its shorter range and smaller bombload relative to other aircraft did not hamper it as much as in the Pacific Theater. These losses were a result of concentrated attacks by over 300 German fighters. The. Losses were relatively low - below the 5% threshold that was the. [92], The U.S. did not offer B-17s to the Soviet Union as part of its war materiel assistance program, but at least 73 aircraft were acquired by the Soviet Air Force. ", "890th Bryanskiy Bomber Aviation Regiment", "The Surprising Story of Japan's B-17 Fleet", "Warbird Registry Boeing B-17 Flying Fortress", "US Coast Guard Aviation History: Boeing PB-1G 'Flying Fortress'. All of these modifications made the YB-40 well over 10,000lb (4,500kg) heavier than a fully loaded B-17F. On 8 August 1934, the USAAC tendered a proposal for a multiengine bomber to replace the Martin B-10. [152] According to these allegations, the practice was initially successful, but Army Air Force combat aircrews quickly developed and established standard procedures to first warn off, and then fire upon any "stranger" trying to join a group's formation. As he maneuvered his unarmed B-17 bomber over the island of Oahu, U.S. Army Lt. Robert Thacker was puzzled. [100], A second attempt on Schweinfurt on 14 October 1943 later came to be known as "Black Thursday". These aircraft were primarily used for agent drop missions over the People's Republic of China, flying from Taiwan, with Taiwanese crews. 1, 17 August 1942", "How Allied Air Attacks Evolved During World War II", "Combat Chronology of the U.S. Army Air Forces: April 1945.". On 28 May 1962, N809Z, piloted by Connie Seigrist and Douglas Price, flew Major James Smith, USAF and Lieutenant Leonard A. LeSchack, USNR to the abandoned Soviet arctic ice station NP 8, as Operation Coldfeet. In early 1942, the 7th Bombardment Group began arriving in Java with a mixed force of B-17s and LB-30/B-24s. Of the 13 YB-17s ordered for service testing, 12 were used by the 2nd Bomb Group of Langley Field, Virginia, to develop heavy bombing techniques, and the 13th was used for flight testing at the Material Division at Wright Field, Ohio. [clarification needed] Stories circulated of B-17s returning to base with tails shredded, engines destroyed and large portions of their wings destroyed by flak. Gift of Peggy Wallace, 2010.308.082. Operational History. [ Via] B17f-42-30336 landed in a field at Norholm Estate near Varde Denmark on 9.10.1943 after developing engine trouble, the crew baled out and the pilot landed the plane . It was code-named "Tachikawa 105" after the mystery aircraft's wingspan was measured (104-ft.) but never identified. When bombers crashed in Switzerland. The Fortress came under fire from Japanese fighter aircraft, though the crew was unharmed with the exception of one member who suffered an abrasion on his hand. Most of the escorts turned back or missed the rendezvous, and as a result, 60 B-17s were destroyed. [104], Such high losses of aircrews could not be sustained, and the USAAF, recognizing the vulnerability of heavy bombers to interceptors when operating alone, suspended daylight bomber raids deep into Germany until the development of an escort fighter that could protect the bombers all the way from the United Kingdom to Germany and back. Depends on when they flew. [160][161], The USAF Air Rescue Service of the Military Air Transport Service (MATS) operated B-17s as so-called "Dumbo" air-sea rescue aircraft. The operation, which involved remotely flying Aphrodite drones onto their targets by accompanying CQ-17 "mothership" control aircraft, was approved on 26 June 1944, and assigned to the 388th Bombardment Group stationed at RAF Fersfield, a satellite of RAF Knettishall. The XB-38 was an engine testbed for Allison V-1710 liquid-cooled engines, should the Wright engines normally used on the B-17 become unavailable. More than 250 aircraft crashed or made emergency landings in Switzerland during the Second World War. [17], At the fly-off, the four-engined Boeing's performance was superior to those of the twin-engined DB-1 and Model 146. A New Orleans native, James Linn first became involved with the institution then known as The National D-Day Museum in 2001 as an eighth-grade volunteer on weekends and during the summer. The bombardier essentially took over flight control of the aircraft during the bomb run, maintaining a level altitude during the final moments before release. [150][151] One B-17 of KG200, bearing the Luftwaffe's KG 200 Geschwaderkennung (combat wing code) markings A3+FB, was interned by Spain when it landed at Valencia airfield, 27 June 1944, remaining there for the rest of the war. (U.S. Air Force photo) The Boeing B-17 was one of the primary heavy bombers built by the United States during World War II. "Boeing's Battle Wagon: The B-17 Flying Fortress An Outline History". Artists who served on the bomber units also created paintings and drawings depicting the combat conditions in World War II. While models A through D of the B-17 were designed defensively, the large-tailed B-17E was the first model primarily focused on offensive warfare. There were 12,731 B-17s built between 1936 and 1945. The B-17's armament consisted of five .30 caliber (7.62 mm) machine guns, with a payload up to 4,800 lb (2,200 kg) of bombs on two racks in the bomb bay behind the cockpit. Forty-five planes survive in complete form, 38 in the United States. Later versions carried four or even six MG 151/20 cannon and twin 13mm machine guns. The largest of the ghettos where Eastern European Jews were first confined and, later, deported to extermination camps by the Nazis was set up in Warsaw, Poland. ", Frisbee, John L. "Valor: A Point of Honor. . The YB-40s with their numerous heavy modifications had trouble keeping up with the lighter bombers once they had dropped their bombs, so the project was abandoned and finally phased out in July 1943. In 1942, when Eighth Air Force heavy bombers based in Britain first went operational in Europe, they mostly flew what were termed "milk runs" over France, accompanied by fighter escorts. [1][13] The day before, Richard Williams, a reporter for The Seattle Times, coined the name "Flying Fortress" when observing the large number of machine guns sticking out from the new airplane he described it as a "15-ton flying fortress" in a picture caption. Many had dozens of aerial victories; some had over 100. And by 27 April 1945, 2 days after the last heavy bombing mission in Europe, the rate of aircraft loss was so low that replacement aircraft were no longer arriving and the number of bombers per bomb group was reduced. Water spouts just offshore . Gift of Peggy Wallace, 2010.308.040. The operation did not work as expected, with 90 Squadron's Fortresses being unopposed. Of 2,900 men in the crews, about 650 did not return, although some survived as prisoners of war. See answer . Over 5,000 B-17 bombers were lost in combat missions in world war II. The B-17 evolved through numerous design advances[4][5] but from its inception, the USAAC (later, the USAAF) promoted the aircraft as a strategic weapon. Wiki User. "[22][23], The crashed Model 299 could not finish the evaluation, disqualifying it from the competition. London: Arakaki and Kuborn 1991, pp. "Operation Pointblank: Evolution of Allied Air Doctrine During World WarII". [citation needed] As a result, the B-17s' loss rate was up to 25% on some early missions. No products in the cart. Serial number 44-85784 is the last airworthy B-17 in the United Kingdom and is based at the Imperial War Museum Duxford. There are very few films left in existence showing the Me 262 in action, especially shooting down allied bombers with P-51 escorts. The two "E"s were used to develop B-17 air combat counter-tactics and also used as enemy aircraft in pilot and crew training films. She was featured in a USAAF documentary, Memphis Belle: A Story of a Flying Fortress. At the same time, the German nightfighting ability noticeably improved to counter the nighttime strikes, challenging the conventional faith in the cover of darkness. The B-17 was a sturdily built aircraft. [36], A 14th Y1B-17 (37-369), originally constructed for ground testing of the airframe's strength, was upgraded by Boeing with exhaust-driven General Electric turbo-superchargers, and designated Y1B-17A. ", "Question How many bomber flight crews completed their 25 missions to go home?". 21) rocket mortar by the Luftwaffe in mid-August 1943 promised the introduction of a major "stand-off" style of offensive weapon one strut-mounted tubular launcher was fixed under each wing panel on the Luftwaffe's single-engine fighters, and two under each wing panel of a few twin-engine Bf 110 daylight Zerstrer aircraft. Japanese activity forced them to divert from Hickam Field to Bellows Field. The Allison V-1710 was allocated to fighter aircraft. Additional armament included an additional dorsal turret in the radio room, a remotely operated and fired Bendix-built "chin turret" directly below the bombardier's accommodation, and twin .50in (12.7mm) guns in each of the waist positions. However, the use of this rigid formation meant that individual aircraft could not engage in evasive maneuvers: they had to fly constantly in a straight line, which made them vulnerable to German flak. [97], The two different strategies of the American and British bomber commands were organized at the Casablanca Conference in January 1943. [140] Making it back to base on numerous occasions, despite extensive battle damage, the B-17's durability became legendary;[138][139] stories and photos of B-17s surviving battle damage were widely circulated during the war. [98], Operation Pointblank opened with attacks on targets in Western Europe. Tora! Gr. Between 1 March and 4 August 1937, 12 of the 13 Y1B-17s were delivered to the 2nd Bombardment Group at Langley Field in Virginia for operational development and flight tests. Their first operation, against Wilhelmshaven on 8 July 1941 was unsuccessful. In years following World War I, the United States was heavily influenced by Italian air-power theorist Giulio Douhet who called for heavy investment in a force of bombers to fly over the front-lines, destroy an enemys infrastructure, and break their will to fight. Post accident interviews with Tower and Putt determined the control surface gust lock had not been released. Forty-five planes survive in complete form [1] [a], including 38 in the United States. [87], The air corps renamed United States Army Air Forces (USAAF) on 20 June 1941 used the B-17 and other bombers to bomb from high altitudes with the aid of the then-secret Norden bombsight, known as the "Blue Ox",[88][89] which was an optical electromechanical gyrostabilized analog computer. AFA Statement on Loss of Historic B-17: Painful Reminder of the Sacrifices of WWII Airmen The tragic crash of a historic B-17 Oct. 2 cost the nation an enduring symbol of the sacrifices and heroism displayed by American Airmen in defeating Nazi Germany in World War II. [7] Of the roughly 1.5 million tons of bombs dropped on Nazi Germany and its occupied territories by U.S. aircraft, over 640 000 tons (42.6%) were dropped from B-17s.[8]. The Americans believed the B-17, with the Norden bomb sight, could be that bomber. As the raids of the American bombing campaign grew in numbers and frequency, German interception efforts grew in strength (such as during the attempted bombing of Kiel on 13 June 1943[96]), such that unescorted bombing missions came to be discouraged. This led to more widespread conversion of B-17s as drones and drone control aircraft, both for further use in atomic testing and as targets for testing surface-to-air and air-to-air missiles. The first two ex-USAAF B-17s, a B-17F (later modified to B-17G standard) and a B-17G were obtained by the Navy for various development programs. The bomber's topside surfaces were repainted a dark olive drab, but retained its light gray under wing and lower fuselage surfaces. But because the bombers could not maneuver when attacked by fighters and needed to be flown straight and level during their final bomb run, individual aircraft struggled to fend off a direct attack. One of the two "E" Flying Fortresses was photographed late in the war by U. S. aerial recon. These modifications resulted in a 20% increase in aircraft weight. They were brave. [79][80] On 24 July three B-17s of 90 Squadron took part in a raid on the German capital ship Gneisenau and Prinz Eugen anchored in Brest from 30,000ft (9,100 m), with the objective of drawing German fighters away from 18 Handley Page Hampdens attacking at lower altitudes, and in time for 79 Vickers Wellingtons to attack later with the German fighters refuelling. The British had been bombing from the air, but heavy losses forced them to switch to nighttime area bombing, greatly reducing its effectiveness. Brereton planned B-17 raids on Japanese airfields in Formosa, in accordance with Rainbow 5 war plan directives, but this was overruled by General Douglas MacArthur. Footage of a B-17 bombing raid that was attacked by German flak and Bf-109's in which bombers are hit and shot down. The most famous B-17, the Memphis Belle, toured the U. S. with her crew to reinforce national morale (and to sell war bonds). The B-17 was reported as shot down by observers, but it survived and brought its crew home without injury. Almost all of the other bombers suffered some level of damage. [citation needed], In July 1945, 16 B-17s were transferred to the Coast Guard via the Navy; these aircraft were initially assigned U.S. Navy Bureau Numbers (BuNo), but were delivered to the Coast Guard designated as PB-1Gs beginning in July 1946. Top Image:Close-up of a B-17 Flying Fortress bomber in flight, 1944-45. [9] Requirements were for it to carry a "useful bombload" at an altitude of 10,000ft (3,000m) for 10 hours with a top speed of at least 200mph (320km/h).[10]. Categories Video World War II Related Topics World War II The project came to a sudden end with the unexplained midair explosion over the Blyth estuary of a B-24, part of the United States Navy's contribution as "Project Anvil", en route for Heligoland piloted by Lieutenant Joseph P. Kennedy Jr., future U.S. president John F. Kennedy's elder brother. Frisbee, John L. "Valor: Battle Over Bougainville". [180], Many B-17 crew members received military honors and 17 received the Medal of Honor, the highest military decoration awarded by the United States:[197], Data from The Encyclopedia of World Aircraft[38], Hollywood featured the B-17 in its period films, such as director Howard Hawks' Air Force starring John Garfield and Twelve O'Clock High starring Gregory Peck. The first combat use of the B-17 came not with the USAAC (U.S. Army Air Forces after 1941), but with the Royal Air Force. [75], Three damaged B-17s, one "D" and two "E" series, were rebuilt during 1942 to flying status by Japanese technicians and mechanics, using parts salvaged from abandoned B-17 wrecks in the Philippines and the Java East Indies. Ramsey, Winston G. "The V-Weapons". [citation needed], The B-17 was noted for its ability to absorb battle damage, still reach its target and bring its crew home safely. The bomber was intended from the outset to attack strategic targets by precision daylight bombing, penetrating deep into enemy . [62][63], The YB-40 was a heavily armed modification of the standard B-17 used before the North American P-51 Mustang, an effective long-range fighter, became available to act as escort. For the video game, see. Peak USAAF inventory (in August 1944) was 4,574 worldwide.[76]. General Ira C. Eaker and the Eighth Air Force placed highest priority on attacks on the German aircraft industry, especially fighter assembly plants, engine factories, and ball-bearing manufacturers. [118] National Archives and Records Administration - ARC Identifier 2870 / Local Identifier 18-C-406-2 - AIR WAR IN EUROPE - War Department. Gift of Peggy Wallace, 2010.308.034, B-17 Flying Fortress bomber dropping bombs on targets in Europe, 1944-45. [28], A total of 155 B-17s of all variants were delivered between 11 January 1937 and 30 November 1941, but production quickly accelerated, with the B-17 once holding the record for the highest production rate for any large aircraft. A 14th aircraft, the YB-17A, originally destined for ground testing only and upgraded with the turbochargers,[57] was redesignated B-17A after testing had finished.[39][40]. The prototype B-17 Bomber was built at the company's own expense and was a fusion of the features of Boeing XB-15 and Boeing 247 Transport Aircraft. How many B-17 were shot down over Germany? Clearly, something had to be done because the bomber was not getting through. Life and Death Aboard a B-17, 1944. [142] Its toughness was compensation for its shorter range and lighter bomb load compared to the B-24 and British Avro Lancaster heavy bombers. The four-engine plane typically carried a crew of 10, several of whom. A Fortress IIA from No. The bombers were assumed either lost by various means or scrapped late in the war for their vital war materials. This. [50] The B-17C changed from three bulged, oval-shaped gun blisters to two flush, oval-shaped gun window openings, and on the lower fuselage, a single "bathtub" gun gondola housing,[51] which resembled the similarly configured and located Bodenlafette/"Bola" ventral defensive emplacement on the German Heinkel He 111P-series medium bomber. It was a four engine, heavy bomber which first flew on July 28, 1935. [128], At their peak, 168 B-17 bombers were in the Pacific theater in September 1942, but already in mid-1942 Gen. Arnold had decided that the B-17 was unsuitable for the kind of operations required in the Pacific and made plans to replace all of the B-17s in the theater with B-24s (and later, B-29s) as soon as they became available. The AAF's worst accident rate was recorded by the A-36 Invader version of the P-51: a staggering 274 accidents per 100,000 flying hours. The B-17F variants were the primary versions flying for the Eighth Air Force to face the Germans in 1943 and had standardized the manned Sperry ball turret for ventral defense, also replacing the earlier, 10-panel framed bombardier's nose glazing from the B subtype with an enlarged, nearly frameless Plexiglas bombardier's nose enclosure for improved forward vision. [160][163] Coast Guard PB-1Gs were stationed at a number of bases in the U.S. and Newfoundland, with five at Coast Guard Air Station Elizabeth City, North Carolina, two at CGAS San Francisco, two at NAS Argentia, Newfoundland, one at CGAS Kodiak, Alaska, and one in Washington state. ", Frisbee, John L. "Valor: A Tale of Two Texans.". Of the 291 attacking Fortresses, 60 were shot down over Germany, five crashed on approach to Britain, . 206 Squadron RAF sank U-627 on 27 October 1942, the first of 11 U-boat kills credited to RAF Fortress bombers during the war.[86]. the B-17 was a fourengine heavy bomber aircraft used by the U.S. Army Air Force during World War II. Blast damage was caused over a radius of 5 miles (8.0km). One of the most significant weapons of World War II would be ready, but only by a hair. The prototype B-17, with the Boeing factory designation of Model 299, was designed by a team of engineers led by E. Gifford Emery and Edward Curtis Wells, and was built at Boeing's own expense. The Boeing B-17 Flying Fortress is an American four-engine heavy bomber used by the United States Army Air Forces and other Allied air forces during World War II. For many, the B-17 is the iconic bomber of the war, and the Flying Fortress"remains a symbol of American might. [25] Army Chief of Staff Malin Craig cancelled the order for 65 YB-17s, and ordered 133 of the twin-engined Douglas B-18 Bolo, instead.[19][20]. the Germans broke off to refuel having shot down 15 B-17s. An early model YB-17 also appeared in the 1938 film Test Pilot with Clark Gable and Spencer Tracy, and later with Clark Gable in Command Decision in 1948, in Tora! The Me 262, however, had moderate success against the B-17 late in the war. [138][139][140] Wally Hoffman, a B-17 pilot with the Eighth Air Force during World WarII, said, "The plane can be cut and slashed almost to pieces by enemy fire and bring its crew home. While the US Fifteenth Air Force also had B-17s, the most famous group to fly them during the war was the US Eighth Air Force based out of England. His views were supported by Eighth Air Force statisticians, whose mission studies showed that the Flying Fortress's utility and survivability was much greater than those of the B-24 Liberator. ", "Second-Generation Norden Bombsight Vault", "Aviation Photography: B-17 Flying Fortress. B-17 Flying Fortresses The B-17 Flying Fortress became a symbol of the power of the United States and its air force. The problem was there was no easy way to hit Germany, as a cross-channel invasion of Europe was still years away. [110] The escort fighters reduced the loss rate to below 7%, with a total of 247 B-17s lost in 3,500 sorties while taking part in the Big Week raids. in 1970, and in Memphis Belle with Matthew Modine, Eric Stoltz, Billy Zane, and Harry Connick Jr. in 1990. Copy. The B-17, for all its armor and firepower, was simply unable to continue to fly unescorted against swarms of German fighter aircraft and their sophisticated air defense system. How many b17s were shot down? [71][162][163], In 1946, surplus B-17s were chosen as drone aircraft for atmospheric sampling during the Operation Crossroads atomic bomb tests, being able to fly close to or even through the mushroom clouds without endangering a crew. [101] While the attack was successful at disrupting the entire works, severely curtailing work there for the remainder of the war, it was at an extreme cost. American bomber numbers continued to build in Europe and attacks (and losses) began to build up. These aircraft were painted dark blue, the standard Navy paint scheme which had been adopted in late 1944. On 2 March 1943, six B-17s of the 64th Squadron flying at 10,000ft (3,000m) attacked a major Japanese troop convoy off New Guinea, using skip bombing to sink Kyokusei Maru, which carried 1,200 army troops, and damage two other transports, Teiyo Maru and Nojima. [10] The B-17's armament consisted of five .30 caliber (7.62mm) machine guns, with a payload up to 4,800lb (2,200kg) of bombs on two racks in the bomb bay behind the cockpit. The ammunition load was over 11,000 rounds. [112], On 7 December 1941, a group of 12 B-17s of the 38th (four B-17C) and 88th (eight B-17E) Reconnaissance Squadrons, en route to reinforce the Philippines, was flown into Pearl Harbor from Hamilton Field, California, arriving while the surprise attack on Pearl Harbor was going on. ", "Why Use Colourful Camouflage in World War 2? [72], The B-17 began operations in World WarII with the Royal Air Force (RAF) in 1941, and in the Southwest Pacific with the U.S. Army. How many B-17 Crews died? The Germans shot down 36 aircraft with the loss of 200 men, and coupled with a raid earlier in the day against Regensburg, a total of 60 B-17s were lost that day. ", "Army Bomber Flies 2,300 Miles In 9 Hours, or 252 Miles an Hour; New All-Metal Monoplane Sets a World Record on Non-Stop Flight From Seattle to Dayton, Ohio. "Boeing Model 299 (B-17 Flying Fortress).". Create. Meantime 60 B-17's were lost to all causes (including flak). [91], The USAAF began building up its air forces in Europe using B-17Es soon after entering the war. Two experimental versions of the B-17 were flown under different designations, the XB-38 Flying Fortress and the YB-40 Flying Fortress. [168], Thirty-two B-17Gs[169] were used by the Navy under the designation PB-1W, the suffix -W indicating an airborne early warning role. In July 1940, an order for 512 B-17s was issued,[43] but at the time of the attack on Pearl Harbor, fewer than 200 were in service with the army. One of the worst days of the war for the B-17 and its crewmen was the second raid on German ball bearing production in Schweinfurt, Germany on October 14, 1943.
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how many b17s were shot down during ww2
