Tag Archives: Clipper America

3 January 1981

One of the first Boeing 707 airliners delivered to Pan American World Airways, Clipper Maria, N707PA. (Pan Am)
One of the first Boeing 707 airliners delivered to Pan American World Airways, N707PA. (Pan Am)

3 January 1981: Pan American World Airways retired its last Boeing 707 airliner. Pan Am had been the launch customer for the 707. On 20 October 1955 the airline ordered twenty 707s, and later ordered 130 more. The first one, Clipper America, a 707-121, N707PA, was delivered 15 August 1958. On 26 October 1958, N711PA, also named Clipper America,¹ made the first regularly scheduled transatlantic flight by a jet airliner.

Pan American World Airways’ Boeing 707-121, N711PA, Clipper America, arriving at Aéroport de Paris–Le Bourget, Paris, France, 27 October 1958. (Photograph © Jon Proctor, used with permission)

The Boeing Model 707-121 was a four-engine jet transport with swept wings and tail surfaces. The leading edge of the wings were swept at a 35° angle. The airliner had a flight crew of four: pilot, co-pilot, navigator and flight engineer.

The 707-121 was 145 feet, 1 inch (44.221 meters) long with a wing span of 130 feet, 10 inches (39.878 meters). The top of the vertical fin stood 41 feet, 8 inches (12.700 meters) high. The 707 pre-dated the ”wide-body” airliners, having a maximum fuselage width of 12 feet, 4.0 inches (3.759 meters). The airliner’s typical operating empty weight is 122,500 pounds (55,565 kilograms). Maximum take off weight is 257,340 pounds (116,727 kilograms).

Pan American World Airways’ Boeing 707-121 Clipper Constitution, N708PA. This was the very first production 707. (Pentakrom)

The first versions were powered by four Pratt & Whitney Turbo Wasp JT3C-6 turbojet engines, producing 11,200 pounds of thrust (49,820 kilonewtons), and 13,500 pounds (60.051 kilonewtons) with water injection. This engine was a civil variant of the military J57 series. It was a two-spool axial-flow turbojet engine with a 16-stage compressor and 2 stage turbine. The JT3C-6 was 11 feet, 6.6 inches (3.520 meters) long, 3 feet, 2.9 inches (0.988 meters) in diameter, and weighed 4,235 pounds (1,921 kilograms).

At MTOW, the 707 required 11,000 feet (3,353 meters) of runway to take off.

The 707-121 had an economical cruise speed of 550 miles per hour (885 kilometers per hour) at 35,000 feet (10,668 meters), and a maximum cruise speed of 593 miles per hour (954 kilometers per hour) at 30,000 feet (9,144 meters)—0.87 Mach. It’s range was 2,800 nautical miles (5,186 kilometers).

The Boeing 707 was in production from 1958 to 1979. 1,010 were built. Production of 707 airframes continued at Renton until the final one was completed in April 1991. As of 2011, 43 707s were still in service.

Pan American World Airway's Boeing 707-139B, N778PA, Clipper Skylark, along with many of her sisterships, in storage at Marana Air Park, Arizona.
Pan American World Airway’s Boeing 707-139B, N778PA, Clipper Skylark, along with many of her sister ships, in storage at Marana Air Park, Arizona. (Goleta Air & Space Museum)

¹ At least three Pan Am 707s carried the name Clipper America. N709PA was renamed Clipper Tradewind. N710PA, was renamed Clipper Caroline. N711PA was renamed Clipper Mayflower.

© 2019, Bryan R. Swopes

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10 December 1958

One of the first Boeing 707 airliners delivered to Pan American World Airways, Clipper Maria, N707PA. (Pan Am)
One of the first Boeing 707 airliners delivered to Pan American World Airways, Clipper Maria, N707PA. (Pan Am)

10 December 1958: Using a Boeing 707 leased from Pan American World Airways, National Airlines became the first U.S. airline to operate jet airliners within the United States.

Pan American’s Clipper America, N710PA, a Boeing 707-121, departed Idlewild Airport (IDL), New York City, new York, at 9:54 a.m., Eastern Standard Time, bound for Miami International Airport (MIA), 949 nautical miles (1,092 statute miles/1,756 kilometers) to the south-southwest. The National Airlines pilots were Captain Roger Whittacker and Captain David B. Gannon. The airliner carried 102 passengers.

N710PA arrived at Miami at 12:39 p.m. Departing Miami at 2:13 p.m., returned to New York and touched down at Idlewild at 4:52 p.m. The 707 was flown on a scheduled Pan Am flight that night.

A contemporary news magazine article discussed the lease arrangement:

National Airlines timetable, 26 October 1958. (Don Henchel Collection via Airline Timetable Images)
National Airlines timetable, 26 October 1958. (Don Henchel Collection via Airline Timetable Images)

“Monday, Dec. 08, 1958: One of the few U.S. airlines climbing out of the labor fog last week was National Airlines, whose routes stretch along the Atlantic Coast to Florida. On Dec. 10 National will inaugurate the first domestic jet airliner service with daily flights on the rich New York-Miami run. Using 600-m.p.h. Boeing 707s under a complicated lease-stock deal with Pan American, which already flies jets across the Atlantic, National will make the 1,100-mile run in 2 hr. 15 min. To make sure that it can fly jets, National signed contracts with its pilots, flight engineers and mechanics running into 1960. National is paying well to be the first domestic jet operator. Plans call for three 707s under lease around the first of the year, each one costing an estimated $216,000 per month to operate and maintain. To sweeten the kitty. National has also agreed to a stock exchange that, if CAB approves, will eventually give Pan Am a big voice in its affairs. In a $16 million swap, the two lines will exchange 400,000 shares of stock, and Pan Am will get a two-year option to buy another 250,000 shares of National stock at $22.50 per share. The effect would be to give National a minor (6%) interest in Pan American, while Pan Am could gain 36% of National if it exercises its option. . . .”

TIME Magazine, 8 December, 1958

American Airlines was the first domestic carrier to fly its own Boeing 707s, with the first flight from Los Angeles to new York, 25 January 1959.

National Airlines was a domestic carrier, founded in 1930. Pan Am acquired the airline 7 January 1980.

Screen Shot 2015-12-11 at 17.26.30
National Airlines advertisement, Fall 1958. (Don Henchel Collection via Airline Timetable Images)

The Boeing 707 was developed from the earlier Model 367–80, the “Dash Eighty.”

The Boeing Model 707-121 was a four-engine jet transport with swept wings and tail surfaces. The leading edge of the wings were swept at a 35° angle. The airliner had a flight crew of four: pilot, co-pilot, navigator and flight engineer.

The 707-121 was 145 feet, 1 inch (44.221 meters) long with a wing span of 130 feet, 10 inches (39.878 meters). The top of the vertical fin stood 42 feet, 5 inches (12.929 meters) high. The 707 pre-dated the ”wide-body” airliners, having a fuselage width of 12 feet, 4 inches (3.759 meters). The airliner’s empty weight is 122,533 pounds (55,580 kilograms). Maximum take off weight is 257,000 pounds (116,573 kilograms).

The first versions were powered by four Pratt & Whitney Turbo Wasp JT3C-6 turbojet engines, producing 11,200 pounds of thrust (49.82 kilonewtons), and 13,500 pounds (60.051 kilonewtons) with water injection. This engine was a civil variant of the military J57 series. It was a two-spool axial-flow turbojet engine with a 16-stage compressor and 2 stage turbine. The JT3C-6 was 11 feet, 6.6 inches (3.520 meters) long, 3 feet, 2.9 inches (0.988 meters) in diameter, and weighed 4,235 pounds (1,921 kilograms).

At MTOW, the 707 required 11,000 feet (3,352.8 meters) of runway to take off.

The 707-121 had a maximum speed of 540 knots (1,000 kilometers per hour). It’s range was 2,800 nautical miles (5,185.6 kilometers).

N710PA, c/n 17589, was delivered to Pan American 29 September 1958. It was later renamed Clipper Caroline. In 1965, the airliner was upgraded to the 701-121B configuration. After being sold by Pan Am, it served with a number of different companies. It was scrapped in 1984.

Note: Thanks to regular TDiA reader Tom Facer for suggesting this post.

© 2018, Bryan R. Swopes

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26 October 1958

Pan American World Airways’ Boeing 707-121, N711PA, Clipper America, at Idlewild Airport, New York, 26 October 1958. (Pan American World Airways)

26 October 1958: Pan American World Airways opened the “Jet Age” with the first commercial flight of an American jet airliner. Pan Am’s Boeing 707-121 Clipper America, N711PA, departed New York Idlewild (IDL) on an 8 hour, 41 minute flight to Paris Le Bourget (LBG), with a fuel stop at Gander, Newfoundland (YQX). (The actual flight time was 7 hours.) The distance was 3,634 miles (5,848 kilometers). Aboard were 111 passengers and 11 crewmembers.

A Pan Am company publication explained the need for the stop at Gander:

The Jet could not be fully loaded with fuel before takeoff because of weight restrictions imposed at Idlewild. Fuel capacity of the jet is 17,398 gallons, allowing a cruising range of 4,400 miles. But with a full pay load of passengers, only 9,731 gallons could be taken aboard in New York.

Pan American Clipper, Vol. XV, No. 11, November 1958, Page 6, Column 5

The Boeing 707 was developed from the earlier Model 367–80, the “Dash Eighty”. It is a four-engine jet transport with swept wings and tail surfaces. The leading edge of the wings are swept at a 35° angle. The airliner had a flight crew of four: pilot, co-pilot, navigator and flight engineer. The 707-121 is 145 feet, 1 inch (44.221 meters) long with a wing span of 130 feet, 10 inches (39.878 meters). The top of the vertical fin stands 42 feet, 5 inches (12.929 meters) high. The 707 pre-dated the ”wide-body” airliners, having a fuselage width of 12 feet, 4 inches (3.759 meters).

The first versions were powered by four Pratt & Whitney Turbo Wasp JT3C-6 turbojet engines, producing 11,200 pounds of thrust (49,820 kilonewtons), and 13,500 pounds (60.051 kilonewtons) with water injection. This engine was a civil variant of the military J57 series. It was a two-spool axial-flow turbojet engine with a 16-stage compressor and 2 stage turbine. The JT3C-6 was 11 feet, 6.6 inches (3.520 meters) long, 3 feet, 2.9 inches (0.988 meters) in diameter, and weighed 4,235 pounds (1,921 kilograms).

The airliner’s empty weight is 122,533 pounds (55,580 kilograms). Maximum take off weight (MTOW) is 257,000 pounds (116,573 kilograms). At MTOW, the 707 required 11,000 feet (3,352.8 meters) of runway to take off. Its maximum speed is 540 knots (1,000 kilometers per hour). It had a range of 2,800 nautical miles (5,185.6 kilometers).

The Boeing 707 was in production from 1958 to 1979. 1,010 were built. As of 2011, 43 707s were still in service.

Boeing delivered N711PA to Pan American on 17 October 1958. The airliner was named Clipper America,  but was later renamed Clipper Mayflower. It was leased to Avianca (Aerovías Nacionales de Colombia S.A.) from 1960 to 1962. In April 1965 the 707 was upgraded to the –121B standard. This included a change from the turbojet engines to quieter, more powerful and efficient Pratt and Whitney JT3D-1 turbofans, producing 17,000 pounds of thrust. The wings were modified to incorporate changes introduced with the Boeing 720, and a longer tailplane installed. Pan Ayer of Panama purchased Clipper Mayflower 21 February 1975. It was later leased to Türk Hava Yolları, the Turkish national airline, and went on to serve with Air Asia Company Limited (an Air America aircraft service unit) and E-Systems. After 26 years of service, in August 1984 Clipper America was scrapped at Taipei.

Pan American World Airways’ Boeing 707-121, N711PA, Clipper America, arriving at Aéroport de Paris – Le Bourget, Paris, France, 27 October 1958. (Photograph © Jon Proctor. Used with permission.)

© 2018, Bryan R. Swopes

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