Tag Archives: Boeing Airplane Company

8 February 1933

Boeing 247 NC13300 (Boeing)
Boeing 247 NC13300 (Boeing)

8 February 1933: Boeing test pilot Leslie R. (“Les”) Tower and United Air Lines Captain Louis C. Goldsmith made the first flight of the Boeing Model 247, NX13300, a twin-engine airline transport, at Boeing Field, Seattle, Washington. The first flight lasted 40 minutes and Tower was quite pleased with the airplane. He took it up a second time later in the day.

The Boeing Model 247 instrument panel used gyroscopic-stabilized instruments for instrument flight. (Unattributed)
The Boeing Model 247 instrument panel used gyroscopic-stabilized instruments for instrument flight. (Boeing)

The 247 is considered to be the first modern airliner because of its all-metal semi-monocoque construction, cantilevered wing and retractable landing gear. It was 50 miles per hour (80.5 kilometers per hour) faster than its contemporaries, and could climb on one engine with a full load.

The airplane was built at Boeing’s Oxbow factory on the Duwamish River, then barged to Boeing Field where it was assembled and tested. The 247 was originally named “Skymaster,” but this was soon dropped.

Two months after the first flight, the first production 247, NC13301, was placed in service with United Air Lines. It was the first of ten 247s bought by United.

This postcard illustration shows the interior arrangement of a Boeing 247 airliner. (United Air Lines)
This postcard illustration shows the interior arrangement of a Boeing 247 airliner. (United Air Lines)

The Model 247 was operated by a pilot, co-pilot and a flight attendant and carried up to ten passengers. The airplane was 51 feet, 5 inches (15.672 meters) long, with a wingspan of 74 feet, 1 inch (22.581 meters) and overall height of 12 feet, 5 inches (3.785 meters). The empty weight was 8,921 pounds (4,046.5 kilograms) with a maximum takeoff weight of 16,805 pounds (7,622.6 kilograms).

The Duralamin skin panels were anodized, rather than painted, for corrosion protection. This saved weight, and resulted in the 247’s characteristic gray-green color.

The airliner was powered by two air-cooled, supercharged, 1,343.804-cubic-inch-displacement (22.021 liters) Pratt & Whitney Wasp S1H1-G nine-cylinder radial engines with a compression ratio of 6.03:1. The S1H1-G had a Normal power rating of 550 horsepower at 2,200 r.p.m., to 8,000 feet (2,438 meters), and 600 horsepower at 2,250 r.p.m. for Takeoff. They drove three-bladed Hamilton Standard constant-speed propellers through a 3:2 gear reduction. The Wasp S1H1-G was 3 feet, 11.80 inches (1.214 meters) long, 4 feet, 3.61 inches (1.311 meters) in diameter, and weighed 930 pounds (422 kilograms).

The Boeing 247 had a maximum speed of 200 miles per hour (321.9 kilometers per hour) with a cruising speed of 188 miles per hour (302.6 kilometers per hour. It had a range of 745 miles (1,199 kilometers) and a service ceiling of 25,400 feet (7,742 meters).

A contemporary photo post card depicts United Air Lines stewardesses with a Boeing Model 247 airliner. The post mark on the reverse side is faintly visible.
A contemporary photo post card depicts ten United Air Lines stewardesses with a Boeing Model 247 airliner. The post mark on the reverse side is faintly visible. (United Air Lines)

75 Model 247s were built. 60 were bought by Boeing Air Transport.

NC13301, the first production Boeing Model 247 airliner. (NASM)

[Note: the windshield was canted forward to prevent instrument panel lighting from reflecting into the cockpit at night. Unfortunately, ground lighting was reflected instead. This was soon changed to a rearward slant and resulted in a slight increase in speed.]

© 2017, Bryan R. Swopes

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24 January 1963

Boeing B-52C-40-BO Stratofortress 53-400, the same type as 53-406 which crashed 24 January 1963. (U.S. Air Force)
Boeing B-52C-40-BO Stratofortress 53-400, the same type as 53-406, which crashed on Elephant Mountain, 24 January 1963. (U.S. Air Force)

24 January 1963: A Boeing B-52C-40-BO Stratofortress, 53-0406, call sign “Frosh 10,” of the 99th Bombardment Wing, Heavy, was conducting a low-altitude training flight using terrain-following radar. Eight crewmen were aboard. Flying at or below 500 feet (152 meters) above ground level (AGL) and at 280 knots (322 miles per hour, 519 kilometers per hour) the bomber encountered wind gusts of up to 40 knots (21 meters per second).

As the turbulence became severe, the aircraft commander, Lieutenant Colonel Dante E. Bulli, began a climb to avoid it. At approximately 2:52 p.m., EST, however, the vertical fin attachment failed and the B-52 began rolling to the right and pitching down. Colonel Bulli, unable to control the airplane, ordered the crew to abandon the bomber.

B-52C 53-0406 crashed into the west side of Elephant Mountain, 6 miles (10 kilometers) from Greenville, Maine. Only three men, Colonel Bulli, co-pilot Major Robert J. Morrison and navigator Captain Gerald J. Adler, were able to get out of the B-52, but Major Morrison died when he hit a tree. Lieutenant Colonel Joe R. Simpson, Jr., Major William W. Gabriel, Major Robert J. Hill, Jr., Captain Herbert L. Hansen, Captain Charles G. Leuchter and Technical Sergeant Michael F. O’Keefe were also killed.

The Boeing B-52 Stratofortress had been designed as a very high altitude penetration bomber, but changes in Soviet defensive systems led to a change to very low altitude flight as a means of evading radar. This was subjecting the airframes to unexpected stresses. Several crashes resulted from structural failures during turbulence.

Less than one year later, Boeing was conducting flight tests of the B-52 in turbulence, using a highly-instrumented B-52H. That airplane also lost its vertical fin when it encountered severe turbulence in Colorado. The Boeing test pilots aboard were able to save the bomber and landed it six hours later.

Boeing B-52H-170-BW Stratofortress 61-023, "Ten-Twenty-Three", after losing the vertical fin, 10 January 1964. (Boeing)
Boeing B-52H-170-BW Stratofortress 61-023, “Ten-Twenty-Three”, after losing the vertical fin, 10 January 1964. (Boeing)
Colonel Dante E. Bulli, United States Air Force

Dante E. Bulli was born at Cherry, Illinois, 17 July 1922, the second child of Italian immigrants Giovanni Bulli, a salesman, and Anna Gareto Bulli.  He attended Hall High School before working on the aircraft assembly lines of the Lockheed Aircraft Company in California. Bulli enlisted as an aviation cadet in the U.S. Army Air Corps in 1942. He was commissioned as a second lieutenant, Army of the United States, 5 December 1943, and promoted to first lieutenant, 5 December 1946.

In 1947 Lieutenant Bulli married Miss Evelyn Lewis, also from Cherry, Illinois.

“Dan” Bulli was a combat veteran of World War II, the Korean War and the Vietnam War. He flew B-24 Liberators, the B-29 Superfortress and B-52 Stratofortress. He retired from the Air Force in 1974.

Colonel Dante E. Bulli died at Omaha, Nebraska, 30 December 2016, at the age of 94 years.

© 2017, Bryan R. Swopes

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12 January 1937

Wreck of Western Air Express Boeing 247D NC13315, Los Pinetos Peak, near newhal, California, 12 January 1937. (Santa Clarita Valley History in Pictures)
Wreck of Western Air Express Flight 7, a Boeing Model 247D, NC13315, at Los Pinetos Peak near Newhall, California, 12 January 1937. (Santa Clarita Valley History in Pictures)

12 January 1937: Western Air Express Flight 7, a Boeing 247D airliner, NC13315, had originated at Salt Lake City, Utah, and after a stop at Las Vegas, Nevada, continued on toward Union Air Terminal, Burbank, California. Aboard were a crew of three and ten passengers.

In fog and falling snow, Captain William W. Lewis and co-pilot Clifford P. Owens crossed over Saugus, California “. . . at 5,200 feet [1,585 meters], aircraft was already 300 feet [91 meters] too low. . . Pilot tried to contact Burbank without any success. Due to low visibility caused by fog, pilot did not realize he was flying at an insufficient altitude. In a descent rate of 525 feet per minute [2.667 meters per second], aircraft hit Pinetos Peak. — Bureau of Air Commerce report. The accident occurred at 11:07 a.m., Pacific Time.

According to statements after the accident, Captain Lewis suddenly saw a ridge immediately ahead, and unable to avoid it, cut his engines and raised the nose in an attempt to reduce the impact.

Boeing 247D NC13315, 12 January 1937. (Santa Clarita Valley History in Pictures)
Boeing 247D NC13315, 12 January 1937. (Santa Clarita Valley History in Pictures)

One passenger was killed immediately. The co-pilot and three more of the passengers died of injuries within the next several days.

One of those who died was famed adventurer and film maker Martin Johnson. His wife, Osa Johnson, was also aboard Flight 7 and was seriously injured. Another survivor, R.T. Anderson, would later own Pea Soup Anderson, a famous restaurant in Buellton, California.

Osa and Martin Johnson. (Osa and Martin Johnson Safari Museum)
Osa and Martin Johnson. (Osa and Martin Johnson Safari Museum)

The Boeing Model 247 is considered to be the first modern airliner because of its all-metal, semi-monocoque construction, cantilevered wing and retractable landing gear. It was 50 miles per hour (80 kilometers per hour) faster than its contemporaries, and could climb on one engine with a full load.

The Model 247 was operated by a pilot, co-pilot and a flight attendant and carried up to ten passengers. The airplane was 51 feet, 5 inches (15.672 meters) long, with a wingspan of 74 feet, 1 inch (22.581 meters) and overall height of 12 feet, 5 inches (3.785 meters). The empty weight was 8,921 pounds (4,046.5 kilograms) with a maximum takeoff weight of 16,805 pounds (7,622.6 kilograms).

The Duralamin skin panels were anodized, rather than painted, for corrosion protection. This saved weight, and resulted in the 247’s characteristic gray-green color.

Western Air Express Boeing 247D NC13315. The nose baggage compartment door is open. (Ed Coates Collection)
Western Air Express Boeing 247D NC13315. The nose baggage compartment door is open. (Ed Coates Collection)

The airliner was powered by two air-cooled, supercharged, 1,343.804-cubic-inch-displacement (22.021 liters) Pratt & Whitney Wasp S1H1-G nine-cylinder radial engines with a compression ratio of 6.03:1. The S1H1-G had a Normal power rating of 550 horsepower at 2,200 r.p.m., to 8,000 feet (2,438 meters), and 600 horsepower at 2,250 r.p.m. for Takeoff. They drove three-bladed Hamilton Standard constant-speed propellers through a 3:2 gear reduction, when installed on the 247D. The Wasp S1H1-G was 3 feet, 11.80 inches (1.214 meters) long, 4 feet, 3.61 inches (1.311 meters) in diameter, and weighed 930 pounds (422 kilograms).

The Boeing 247 had a maximum speed of 200 miles per hour (321.9 kilometers per hour) with a cruising speed of 188 miles per hour (302.6 kilometers per hour. It had a range of 745 miles (1,199 kilometers) and a service ceiling of 25,400 feet (7,742 meters).

75 Model 247s were built. 60 were bought by Boeing Air Transport.

[Note: the windshield was canted forward to prevent instrument panel lighting from reflecting into the cockpit at night. Unfortunately, ground lighting was reflected instead. This was soon changed to a rearward slant and resulted in a slight increase in speed.]

Western Air Express Boeing 247D NC13315, 1933. (SCVhistory.com)
Western Air Express Boeing 247D NC13315, 1933. (Santa Clarita Valley History in Pictures)

© 2017, Bryan R. Swopes

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30 December 1964

The first Boeing KC-135A-BN Statotanker, 55-3118, City of Renton, refuels B-52C-50-BO Stratofortress 54-2676. (U.S. Air Force)
The first Boeing KC-135A-BN Statotanker, 55-3118, City of Renton, refuels B-52C-50-BO Stratofortress 54-2676. (U.S. Air Force)

30 December 1964: The United States Air Force accepted the last of 732 Boeing KC-135 Stratotankers, KC-135A serial number 64-14840. The new tanker was assigned to the 380th Air Refueling Squadron at Plattsburgh Air Force Base, new York.

Fifty-two years later, 414 KC-135s are still in service. It is estimated that the fleet is 33% through their design lifetime limits.

Built as an aerial refueling tanker to support the U.S. Air Force fleet of B-52 Stratofortress strategic bombers, an initial order for 24 tankers was soon increased to 250. Eventually 732 KC-135As were built by Boeing, and an additional 81 of other versions.

With the company internal designation of Model 717, the KC-135 was developed from the Model 367-80 proof-of-concept prototype, the “Dash Eighty.” The Stratotanker is very similar in appearance to the Model 707 and 720 airliners but is structurally a different aircraft. It is also shorter than the 707 and has a smaller diameter fuselage.

Boeing KC-135R Stratotankers of the 40th Air Expeditionary Group, forward deployed to support B-52 operations. (SMSGT John Rohrer, U.S. Air Force)
Boeing KC-135R Stratotankers of the 40th Air Expeditionary Group, forward deployed to support B-52 operations. (SMSGT John Rohrer, U.S. Air Force)

The Stratotanker was originally operated by a flight crew of five: pilot, co-pilot, navigator, flight engineer and refueling boom operator. Upgrades over the decades have simplified operation and the crew has been reduced to two pilots and the boom operator.

It can carry up to 200,000 pounds (90,719 kilograms) of fuel. It can also be configured to carry cargo or as many as 32 passengers. The KC-135A was originally powered by four Pratt & Whitney J57-P-59W turbojet engines producing 13,750 pounds of thrust (61.16 kilonewtons) for takeoff, using water injection. The fleet has been re-engined with more efficient CFM International CFM56-2B1 (F108-CF-100) turbofan engines which produce 22,000 pounds of thrust (97.86 kilonewtons). The upgraded aircraft are designated KC-135R.

The tanker has a maximum speed of 580 miles per hour (933 kilometers per hour) and a range of 1,500 miles when carrying 150,000 pounds of transfer fuel. The service ceiling is 50,000 feet (15,200 meters).

The last Stratotanker built by Boeing, KC-135R 64-14840, Ohio Air National Guard. 48 years old, this is the newest Stratotanker in the United States Air Force inventory. (EOR 1)
The last Stratotanker built by Boeing, KC-135R 64-14840, Ohio Air National Guard. 52 years old, this is the newest Stratotanker in the United States Air Force inventory. (EOR 1) 

© 2016, Bryan R. Swopes

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20 December 1943

Technical Sergeant Forrest L. Vosler, United States Army Air Corps (U.S. Air Force)
Technical Sergeant Forrest Lee Vosler, United States Army Air Corps (U.S. Air Force)

MEDAL OF HONOR

VOSLER, FORREST L.

(Air Mission)

Rank and organization: Technical Sergeant, U.S. Army Air Corps. 358th Bomber Squadron, 303d Bomber Group.

Place and date: Over Bremen, Germany, December 20, 1943.

Entered service at: Rochester, New York. Born: July 29, 1923, Lyndonville, New York.

G.O. No.: 73, September 6, 1944.

Citation:

Forest Volser was the radio operator on this Boeing B-17F-65-BO Flying Fortress, 42-29664, the "Jersey Bounce Jr." (U.S. Air Force)
Forest Volser was the radio operator on this Boeing B-17F-65-BO Flying Fortress, 42-29664, the “Jersey Bounce Jr.” (U.S. Air Force)

For conspicuous gallantry in action against the enemy above and beyond the call of duty while serving as a radio operator-air gunner on a heavy bombardment aircraft in a mission over Bremen, Germany, on 20 December 1943. After bombing the target, the aircraft in which T/Sgt. Vosler was serving was severely damaged by antiaircraft fire, forced out of formation, and immediately subjected to repeated vicious attacks by enemy fighters. Early in the engagement a 20-mm. cannon shell exploded in the radio compartment, painfully wounding T/Sgt. Vosler in the legs and thighs. At about the same time a direct hit on the tail of the ship seriously wounded the tail gunner and rendered the tail guns inoperative. Realizing the great need for firepower in protecting the vulnerable tail of the ship, T/Sgt. Vosler, with grim determination, kept up a steady stream of deadly fire. Shortly thereafter another 20-mm. enemy shell exploded, wounding T/Sgt. Vosler in the chest and about the face. Pieces of metal lodged in both eyes, impairing his vision to such an extent that he could only distinguish blurred shapes. Displaying remarkable tenacity and courage, he kept firing his guns and declined to take first-aid treatment. The radio equipment had been rendered inoperative during the battle, and when the pilot announced that he would have to ditch, although unable to see and working entirely by touch, T/Sgt. Vosler finally got the set operating and sent out distress signals despite several lapses into unconsciousness. When the ship ditched, T/Sgt. Vosler managed to get out on the wing by himself and hold the wounded tail gunner from slipping off until the other crewmembers could help them into the dinghy. T/Sgt. Vosler’s actions on this occasion were an inspiration to all serving with him. The extraordinary courage, coolness, and skill he displayed in the face of great odds, when handicapped by injuries that would have incapacitated the average crew member, were outstanding.

Technical Sergeant Forrest L. Vosler, United States Army Air Corps, is awarded the Medal of Honor by President Franklin Delano Roosevelt in a ceremony in the Oval Office of the White House, Washington, D.C. (U.S. Air Force)
Technical Sergeant Forrest L. Vosler, United States Army Air Corps, is awarded the Medal of Honor by President Franklin Delano Roosevelt in a ceremony in the Oval Office of the White House, Washington, D.C., 31 August 1944. Shaking Vosler’s hand is Under Secretary of War Robert Porter Patterson, Sr. (U.S. Air Force)

Staff Sergeant Forrest Lee Vosler was the radio operator/top gunnner aboard the Boeing B-17F-65-BO Flying Fortress 42-298664, Jersey Bounce, Jr., one of 21 B-17s of the 303rd Bombardment Group sent on Mission No. 90, an attack against Bremen, Germany. The bomber was under the command of 2nd Lieutenant John F. Henderson. Captain Merle R. Hungerford, an instructor pilot, acted as co-pilot. The bombers encountered heavy antiaircraft fire over the target, and were attacked by as many as 125 enemy fighters. Bombing from an altitude of  26,200 feet (7,986 meters), the B-17s dropped 24 tons of incendiary bombs.

Jersey Bounce, Jr. was hit by anti-aircraft artillery just after its bomb load was released. The number 1 engine, outboard, left wing, and the number 4 engine, outboard, right wing, were  damaged. When the B-17 slowed and dropped out of its formation, it became a target of opportunity for the Luftwaffe fighters. The crew reported that as many as ten fighters attacked, one after another. Flight engineer and top turret gunner Staff Sergeant William H. Simpkins, Jr., was credited with destroying a Focke-Wulf Fw 190 fighter, and right waist gunner Sergeant Ralph F. Burkart shot down a Messerschmitt Me 210 twin-engine heavy fighter. Sergeant Stanley E. Moody, the left waist gunner, destroyed a Messerschmitt Bf 109 and probably shot down a Messerschmitt Bf 110 twin-engine fighter.

The heavily-damaged bomber flew at low altitude as it headed for the North Sea, and then toward England. Vosler sent repeated distress signals which allowed search and rescue aircraft to locate the B-17. Lieutenant Henderson ditched 42-29644 within sight of land. The crew were quickly rescued by a small coastal freighter, MV Empire Sportsman. The bomber crew was then transferred to a British air-sea rescue boat.

Technical Sergeant Vosler was the third of only four enlisted airmen two be awarded the Medal of Honor during World War II. After recuperating from his wounds, Vosler was discharged from the Army Air Corps. He then worked for the Veterans Administration for thirty years. Forrest Lee Vosler died 17 February 1992 at the age of 68 years. He was buried at Arlington National Cemetery.

A Boeing B-17F Flying Fortress (B-17F-95-BO 42-30243). (U.S. Air Force)

Technical Sergeant Vosler was the radio operator aboard the Boeing B-17F-65-BO Flying Fortress 42-29664, Jersey Bounce, Jr. The bomber was on its 32nd combat mission. It had been flown by at least nine different pilots.

42-29664 was delivered from the Boeing plant in Seattle to Denver, Colorado, 30 January 1943. It arrived at Salina, Kansas, 12 February 1943, and was sent on to Morrison, New Jersey, 28 February 1943, and was then flown across the Atlantic Ocean to England. The new B-17F was assigned to the 358th Bombardment Squadron, 303rd Bombardment Group, at RAF Molesworth, Cambridgeshire, England, 21 March 1943. It carried group identification markings VK-C painted on its fuselage.

The Boeing B-17F Flying Fortress was a four-engine heavy bomber operated by a flight crew of ten. It was 74 feet, 9 inches (22.784 meters) long with a wingspan of 103 feet, 9.375 inches (31.633 meters) and an overall height of 19 feet, 1 inch (5.187 meters). Its empty weight was 34,000 pounds (15,422 kilograms), 40,437 pounds (18,342 kilograms) loaded, and the maximum takeoff weight was 56,500 pounds (25,628 kilograms).

The B-17F was powered by four air-cooled, supercharged, 1,823.1-cubic-inch-displacement (29.876 liters) Wright Cyclone C9GC (R-1820-97) nine-cylinder radial engines with turbochargers, producing 1,200 horsepower at 2,500 r.p.m. for takeoff and 1,000 horsepower at 2,300 r.p.m. at Sea Level. War Emergency Power was 1,380 horsepower. The Cyclones turned three-bladed constant-speed Hamilton-Standard Hydromatic propellers with a diameter of 11 feet, 7 inches (3.835 meters) though a 0.5625:1 gear reduction.  The R-1820-97 engine is 47.80 inches (1.214 meters) long and 55.10 inches (1.399 meters) in diameter. It weighs 1,315 pounds (596 kilograms).

These engines gave the B-17F a cruising speed of 200 miles per hour (322 kilometers per hour). The maximum speed was 299 miles per hour (481 kilometers per hour) at 25,000 feet, though with War Emergency Power, the bomber could reach 325 miles per hour (523 kilometers per hour) at 25,000 feet for short periods.

The service ceiling was 37,500 feet (11,430 meters). With a normal fuel load of 2,520 gallons (9,540 liters) the B-17F had a maximum range of 2,880 miles (4,635 kilometers). Carrying a 6,000 pound (2,722 kilogram) bomb load, the range was 1,300 miles (2,092 kilometers).

358th Bombardment Squadron flight crew. Most of the men in this photograph were aboard "Jersey Bounce Jr.", 20 December 1943. Front, left to right: Sgt. Edward Ruppel. ball turret gunner; T/Sgt. Forest L. Vosler, radio operator; S/Sgt. William H. Simpkins, Jr., flight engineer/top turret gunner; Sgt. Gratz, tail gunner 9replaceing teh critically wounded Sgt. George W. Burke, who was rescued by Vosler); Sgt. Raaplh F. Burkhart, waist gunner. Rear, left to right: 2nd Lt. Warren S. Wiggins, navigator; 2nd Lt. Woodrow W. Monkres, bombardier; 2 Lt. Walter J. Ames, co-pilot; 2nd Lt. John F. Henderson, aircraft commander. (U.S. Air Force)
358th Bombardment Squadron flight crew. Most of the men in this photograph were aboard “Jersey Bounce Jr.”, 20 December 1943. Front, left to right: Sgt. Edward Ruppel, ball turret gunner; T/Sgt. Forest L. Vosler, radio operator/top gunner; S/Sgt. William H. Simpkins, Jr., flight engineer/top turret gunner; Sgt. Gratz, tail gunner (replacing the critically wounded Sgt. George W. Burke, who was rescued by Vosler); Sgt. Ralph F. Burkhart, waist gunner. Rear, left to right: 2nd Lt. Warren S. Wiggins, navigator; 2nd Lt. Woodrow W. Monkres, bombardier; 2 Lt. Walter J. Ames, co-pilot; 2nd Lt. John F. Henderson, aircraft commander. (U.S. Air Force)

The B-17F Flying Fortress was armed with up to 13 air-cooled Browning AN/M2 .50-caliber machine guns. Power turrets mounting two guns each were located at the dorsal and ventral positions. The maximum bomb load was 20,800 pounds over very short ranges. Normally, 4,000–6,000 pounds (1,815–2,722 kilograms) were carried. The internal bomb bay could be loaded with a maximum of eight 1,600 pound (725.75 kilogram) bombs. Two external bomb racks mounted under the wings between the fuselage and the inboard engines could carry one 4,000 pound (1,814.4 kilogram) bomb, each, though this option was rarely used.

The B-17 Flying Fortress first flew in 1935, and was was in production from 1937 to 1945. 12,731 B-17s were built by Boeing, Douglas Aircraft Company and Lockheed-Vega. (The manufacturer codes -BO, -DL and -VE follows the Block Number in each airplane’s type designation.) 3,405 of the total were B-17Fs, with 2,000 built by Boeing, 605 by Douglas and 500 by Lockheed-Vega.

Only three B-17F Flying Fortresses remain in existence.

This restored Boeing B-17F-70-BO Flying Fortress, 42-29782, is on display at The Museum of Flight at Seattle's Boeing Field. (Boeing)
This restored Boeing B-17F-70-BO Flying Fortress, 42-29782, is on display at The Museum of Flight at Seattle’s Boeing Field. (Boeing)

© 2016, Bryan R. Swopes

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