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Lockheed L-1011-1 TriStar

The L-1011-1 is the original TriStar and the most numerous: 123 were built. It is 177 ft 8 in long with a 155 ft 4 in wingspan, and three Rolls-Royce RB211-22B turbofans of 42,000 pounds of thrust each power it. Its maximum take-off weight is 430,000 pounds. Delta Air Lines flew it with 250 seats, 50 in first class and 200 in economy, and the Federal Aviation Administration certified it for up to 400 passengers when fitted with four cabin doors on each side.

Seats
About 250 in two classes (up to 400)
Engines
Three Rolls-Royce RB211-22B turbofans, two under the wings and one in the tail
Max takeoff weight
430,000 lb (195,045 kg)
Lockheed L-1011 TriStar
Photo: Faisal Akram, CC BY-SA 2.0
Lockheed L-1011-1 TriStar seen from above: length 177 ft 9 in (54.17 m), wingspan 155 ft 4 in (47.34 m)
Drawing: NASA, Public domain, changed: cropped, NASA logo and caption removed, enlarged

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Specifications

Length177 ft 9 in (54.17 m)
Wingspan155 ft 4 in (47.34 m)
Height55 ft 4 in (16.87 m)
Fuselage width19 ft 7 in (5.97 m)
Fuel capacity23,810 US gal (90,149 L)
First flightNovember 16, 1970
Entry into serviceApril 26, 1972
Number built123 built
StatusRetired in 2001
Type codesICAO L101

History

The L-1011-1 was the model on which the TriStar first flew, on November 16, 1970, and it entered service with Eastern Air Lines on April 26, 1972, three weeks after the first delivery. Rolls-Royce's collapse in February 1971 slowed the program for about ten months. Eastern, Trans World Airlines and Delta were its main early customers. Production of all TriStars ended in 1983, and Lockheed left the commercial aircraft business. Delta, which had the largest fleet, retired the type from scheduled flying on July 31, 2001. Orbital Sciences later converted one L-1011-100 into a launch aircraft for Pegasus rockets.

Sources