Lockheed L-1011 TRISTAR TWA

Over 190 TriStar's were produced from 1972 until 1984 for customers who included: Air Canada , ANA, British Airways, Cathay Pacific, Court Line, Delta (70 different TriStars flew for Delta over the years), Eastern Airlines, Gulf Air, LTU, PSA, TWA, and Saudia.

Unfortunately for Lockheed, their initial estimates of 300 aircraft to break even proved optimistic. In reality, they needed to produced about 500 to break even. Lockheed lost $2.5 billion on the TriStar project and the experience buried them in commercial aerospace. In December 1981, Lockheed announced they were stopping production and taking a final $400 million write off to cover the costs. They never made another major airliner.

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