Tag Archives: Boeing 707 Stratoliner

6 August 1955

Looking out across the right wing of the Boeing 367–80, inverted, at the city of Seattle, 6 August 1955. (Bill Whitehead/Boeing)

6 August 1955: Boeing’s Chief of Flight Test, Alvin M. “Tex” Johnston, barrel-rolled the Model 367-80, prototype of the KC-135 Stratotanker and 707, over Lake Washington.


This photograph was taken by the flight test engineer, Bill Whitehead.

© 2023, Bryan R. Swopes

15 July 1954

Boeing test pilot Alvin M. “Tex” Johnston in the cockpit of of the 367–80. (LIFE Magazine)

15 July 1954: At 2:14 p.m., Boeing test pilots Alvin M. “Tex” Johnston and Richard L. “Dix” Loesch lifted off from Renton Field, south of Seattle, Washington, on the first flight of the Boeing 367–80, FAA registration N70700, a prototype military air tanker and commercial airliner.

At 130 miles per hour (209 kilometers per hour), the Boeing Model 367–80 (“Dash Eighty”) lifts off at Renton Municipal Airport on its first flight, 15 July 1954. (Boeing Images)

Tex Johnston wrote about the first flight of the “Dash Eighty” in his autobiography:

     We completed our before-takeoff checklist, Dix worked the tower, and we were cleared for takeoff. I called the theodolite station: “Dash 80, Johnston, stand by, brake release on the count of three.” At full throttle, the four Pratt and Whitney engines at 100-percent power, tail-pipe temperatures and oil pressure on the money, I said, “One, two, three,” and released the brakes. The airplane leaped forward and accelerated rapidly. We obviously would be airborne by midfield. As airspeed passed the calculated V1 speed, I applied back elevator. The nose lifted off. Dix called 130 mph, and we were airborne.

The Boeing Model 367–80 (“Dash Eighty”) takes of from Renton Field on its first flight, 15 July 1954. (Boeing Images)

     Eyeballing the airspeed, I continued to increase the climb angle to avoid exceeding the flap-down placard limit of 225 mph. We were at 1,200 feet as we climbed past end of the runway. Dix commented, “Is this thing going to climb straight up?” Over Lake Washington, I throttled back to climb power, sure that the spectators had never before witnessed takeoff performance and climb attitude like that. . . .

Tex Johnston: Jet-Age Test Pilot, by A.M. “Tex” Johnston and Charles Barton. Smithsonian Books, Washington, D.C., Chapter 15, Pages 542–543.

The prototype Boeing 367-80, N70700, climbs out at Renton Field, 15 July 1954. (Boeing Images)

For the next 2 hours, 24 minutes they performed high- and low-speed handling tests before landing at Boeing Field, Seattle. When Johnston was asked how the “Dash 80” flew, he replied, “She flew like a bird, only faster.”

Boeing had risked $16,000,000 in a private venture to build the Dash 80 in order to demonstrate its capabilities to potential civilian and military customers, while rivals Douglas and Lockheed were marketing their own un-built jet airliners. Put into production as the U.S. Air Force KC-135 Stratotanker air refueling tanker and C-135 Stratolifter transport, a civil variant was also produced as the Boeing 707, the first successful jet airliner. Though they look very similar, the 707 is structurally different than the KC-135 and has a wider fuselage.

Boeing Aircraft Co. President Bill Allen talks to test pilots Tex Johnston and Dix Loesch after first flight of the Model-367-80 prototype. (Seattle Post-Intelligencer)

The Boeing 707-320B Stratoliner airframe was used for the military E-3A Sentry AWACS command-and-control aircraft, the E-6 Mercury airborne command post, and other versions for reconnaissance, weather, and communications.

820 of the C-135 series and 1,010 Model 707 aircraft were built from 1957–1979.

Boeing Model 367-80 (“Dash Eighty”) in flight. (Joe Parke/Wikipedia)

The prototype Boeing Model 367-80 was operated by a pilot, co-pilot and flight engineer. The airplane’s wing was mounted low on the fuselage and the engine nacelles were mounted on pylons under the wing, as they were on Boeing’s B-47 Stratojet and B-52 Stratofortress. The wings and tail surfaces were swept to 35°. The Dash 80 was 127 feet 10 inches (38.964 meters) long with a wingspan of 129 feet, 8 inches (39.522 meters) and overall height of 38 feet (11.582 meters). Its empty weight was 92,100 pounds (41,775.9 kilograms) and loaded weight was 190,000 pounds (86,182.6 kilograms).

Boeing 367-80 N70700, photographed during its first flight, 15 July 1954. (The Boeing Company)
In tanker configuration, the Boeing 367-80 refuels a Boeing B-52 Stratofortress. The chase plane is a Lockheed T-33A Shooting Star. (U.S. Air Force)
In tanker configuration, the Boeing 367-80 refuels a Boeing B-52 Stratofortress. The chase plane is a Lockheed T-33A Shooting Star. (U.S. Air Force)

N70700 was powered by four Pratt & Whitney Turbo Wasp JT3C engines. This engine is a civil variant of the military J57 series. It is a two-spool, axial-flow turbojet engine with a 16-stage compressor and 2-stage turbine. The JT3C-6 (used in the first production 707s) was rated at 11,200 pounds of thrust (49.82 kilonewtons), and 13,500 pounds (60.05 kilonewtons) with water/methanol injection). The JT3C is 11 feet, 6.6 inches (3.520 meters) long, 3 feet, 2.9 inches (0.988 meters) in diameter, and weighs 4,235 pounds (1,921 kilograms).

These gave the 367-80 a cruise speed of 550 miles per hour (885 kilometers per hour) and a maximum speed of 0.84 Mach (582 miles per hour, 937 kilometers per hour) at 25,000 feet (7,620 meters). The service ceiling was 43,000 feet (13,106 meters). Its range was 3,530 miles (5,681 kilometers).

American Airlines Boeing 707-123 Astrojet, N7501A, Flagship Michigan. (American Airlines)
American Airlines’ Boeing 707-123 Astrojet N7501A, Flagship Michigan. (American Airlines)

Boeing continued to use the 367–80 for testing, finally retiring it 22 January 1970. At that time, its logbook showed 2,346 hours, 46 minutes of flight time (TTAF). It was flown to Davis-Monthan Air Force Base, Tucson, Arizona, and placed in storage. In 1990, Boeing returned it to flyable condition and flew it back it to Renton where a total restoration was completed. Many of those who had worked on the Dash 80, including Tex Johnston, were aboard.

The Dash 80 sat in the Arizona desert for twenty years. (Goleta Air and Space Museum)
The Dash 80 sat in the Arizona desert for twenty years. (Goleta Air and Space Museum)

The pioneering airplane was presented to the Smithsonian Institution and is on display at the National Air and Space Museum, Steven V. Udvar-Hazy Center. The Boeing 367-80 was designated an International Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers.

820 of the C-135 series and 1,010 Model 707 aircraft were built from 1957–1979.

(The Boeing Model 367-80 is on display at the Steven F. Udvar-Hazy center, Smithsonian Institution National Air and Space Museum. (Photo by Dane Penland, National Air and Space Museum, Smithsonian Institution)
The Boeing Model 367-80 is on display at the Steven F. Udvar-Hazy Center, Chantilly, Virginia. (Photo by Dane Penland, National Air and Space Museum, Smithsonian Institution) 

© 2020, Bryan R. Swopes

19 May 1963

Boeing VC-137C Stratoliner 62-6000, SAM 26000. (Boeing)

19 May 1963: During a non-stop flight from Andrews Air Force Base, outside Washington, D.C., to Moscow, Russia, Union of Soviet Socialist Republics, a Boeing VC-137C, 62-6000, under the command of Colonel James B. Swindal, United States Air Force, set 15 Fédération Aéronautique Internationale (FAI) World Records for Speed Over a Recognized Course. Colonel Swindal flew the airplane, commonly known as Air Force One, 5,004 miles (8,053.2 kilometers) in 8 hours, 39 minutes, 2 seconds, averaging 490.96 miles per hour (790.12 kilometers per hour). On the return flight, 15 additional records were set.

The fastest segment of the flight was from to Boston, Massachusetts to Oslo, Norway, at an average speed of 952.62 kilometers per hour (591.93 miles per hour).¹

The New York Times reported:

MOSCOW — President Kennedy’s Air Force jet today set a nonstop speed record between Washington and Moscow and shattered 14 other air records. The $8 million Boeing 707, carrying a ten-man party headed by Atomic Energy Commission chairman Glenn T. Seaborg, touched down eight hours 38 minutes and 42 seconds after takeoff — the fastest flight ever made between the U.S. and the Soviet Union. Interred was a Soviet myth that the U.S. lacked a plane able to make a 5,000-mile run nonstop. The black-nosed blue and white jet, piloted by Col. James B. Swindal, 46, of Falls Church, Virginia, made it with fuel for more than two hours of flight remaining, proving that any delays in reaching a commercial agreement are political, not technical.

The New York Times, 19 May 1963

The Washington Post reported that

. . . On board were a Soviet navigator and a Soviet radio operator, the usual requirements for all international flights over Soviet territory. The two men, both speaking English, flew to Washington to make the flight.

The Washington Post, 20 May 1963

Cockpit of Boeing VC-137C 62-6000, SAM 26000, at the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio. (Washington Blaze)

The Boeing VC-137C was the first of two specially-configured Boeing 707-353B airliners used by the President of the United States, or other senior administration officials. The distinctive white, blue and natural metal livery was created by the famed industrial designer Raymond Loewy.

When the president is aboard, the airplane is designated “Air Force One”. At other times, it uses the Special Air Mission designation, SAM 26000. The airplane entered service in 1962, replacing the three earlier commercial Boeing 707-153 airliners, which were designated VC-137A Stratoliner, USAF serial numbers 58-6970–58-6972.

SAM 26000 was itself replaced by SAM 27000 in 1972, though it remained available as a back-up aircraft. It was retired to the National Museum of the United States Air Force on 20 May 1998.

Boeing VC-137C Stratoliner 62-6000, SAM 26000. (Ralf Manteufel/Wikipedia)

James Barney Swindal was born 18 August 1917 in West Blocton, Alabama. He was the first of two children of Samuel Young Swindal, a carpenter, and Ida Maranda Kornegay Swindal.

James Barney Swindal married Miss Emily Mae Glover on 18 November 1936, at Birmingham, Alabama. They would have two children. He was employed as a crane operator for a cast iron pipe company in Birmingham.

Swindal enlisted as an aviation cadet in the U.S. Army at Montgomery, Alabama, 28 February 1942, shortly after the United States entered World War II. He was blonde with blue eyes, 5 feet, 11 inches (1.80 meters) tall, and weighed 147 pounds (67 kilograms). Trained as a pilot in the U.S. Army Air Forces, he flew transports in the China-Burma-India (CBI) theater of operations. After the War, he participated in the Berlin Airlift.

Swindal became President Kennedy’s personal pilot in 1960. He flew JFK to Berlin for his famous “Ich bin ein Berliner” speech, 26 June 1963, and later flew President Kennedy’s casket from Dallas, Texas to Washington, D.C.  Colonel Swindal retired from the Air Force in 1971. When SAM 26000 arrived at the National Museum of the United States Air Force, he sat in its cockpit for a last time.

Colonel Swindal died at Cape Canaveral, Florida, 25 April 2006, at the age of 88 years. He was buried at the Arlington National Cemetery, Arlington, Virginia.

Colonel James B. Swindal, United States Air Force is congrtulated on his promotion by President John F. Kennedy. (Presidential Library)
Colonel James B. Swindal, United States Air Force, is congratulated on his promotion by President John F. Kennedy, 19 March 1962. (Robert Knudsen. White House Photographs. John F. Kennedy Presidential Library and Museum, Boston JFKWHP-1962-03-19-C)

¹ FAI Record File Number 16472

© 2018, Bryan R. Swopes