SAS

In 1959, SAS entered the jet age, having procured a number of French-built Sud Aviation Caravelles as the company's first jetliner.[16] During the following year, another jetliner, the Douglas DC-8, was also inducted into the fleet.[citation needed]

In addition to modern airliners, SAS also adopted innovative operating practices and systems to improve the customer experience. In 1965, it was the first airline to introduce an electronic reservation system.[16] During 1971, SAS introduced its first Boeing 747 jumbo jet into service.[19] Prior to the delivery of its first 747s, SAS had formed the KSS maintenance consortium with KLM and Swissair in 1969 to provide a maintenance pool and standardize aircraft specifications for the three airlines' 747 fleets. The consortium later incorporated UTA and was renamed into KSSU to jointly acquire and maintain McDonnell Douglas DC-10 widebody trijets.[20][21] In 1982, SAS was recognised as the most punctual airline operating in Europe at that time.[16]

During its first decades, the airline built two large hotels in central Copenhagen, SAS Royal Hotel (5 stars) and the even larger SAS Hotel Scandinavia (4 stars, with a casino on the 26th floor).[16] In 1980, SAS opened its first hotel outside of Scandinavia, the SAS Kuwait Hotel. By 1989, SAS's hotel division owned a 40 percent share in the Intercontinental Hotels Group.[16] Following the deregulation of commercial aviation in Europe and the competitive pressures from new rivals, SAS experienced economic difficulties (as did many incumbent flag carrier airlines) this heavily contributed to the airline's decision to sell its hotel chain to the Radisson Hotel Group during 1992.

The Tristar itself

The Lockheed L-1011 TriStar, also known as the L-1011 (pronounced "El-ten-eleven")[1] and TriStar, is an American medium-to-long-range, wide-body trijet airliner built by the Lockheed Corporation. It was the third wide-body airliner to enter commercial operations, after the Boeing 747 and the McDonnell Douglas DC-10. The airliner has a seating capacity of up to 400 passengers and a range of over 4,000 nautical miles (7,410 km). Its trijet configuration has three Rolls-Royce RB211 engines with one engine under each wing, along with a third engine center-mounted with an S-duct air inlet embedded in the tail and the upper fuselage. The aircraft has an autoland capability, an automated descent control system, and available lower deck galley and lounge facilities.

The L-1011 TriStar was produced in two fuselage lengths. The original L-1011-1 first flew in November 1970 and entered service with Eastern Air Lines in 1972. The shortened, longer range L-1011-500 first flew in 1978 and entered service with British Airways a year later. The original-length TriStar was also produced as the high gross weight L-1011-100, up-rated engine L-1011-200, and further upgraded L-1011-250. Post-production conversions for the L-1011-1 with increased takeoff weights included the L-1011-50 and L-1011-150.

The L-1011 TriStar's sales were hampered by two years of delays due to developmental and financial problems at Rolls-Royce, the sole manufacturer of the aircraft's engines. Between 1968 and 1984, Lockheed manufactured a total of 250 TriStars, assembled at the Lockheed plant located at the Palmdale Regional Airport in southern California north of Los Angeles. After L-1011 production ended, Lockheed withdrew from the commercial aircraft business due to its below-target sales.