Lockheed L-1011 TriStar

Key Specifications

Overview

The Lockheed L-1011 TriStar is a wide-body jet airliner that entered service in 1972, representing a significant advancement in commercial aviation during the 1970s and 1980s. Distinguished by its three Rolls-Royce RB211 turbofan engines—with the third engine mounted in the tail—the TriStar offered superior reliability, passenger comfort, and cargo capacity for its era. The aircraft was designed to compete with the Douglas DC-10 and Boeing 747, serving primarily as a long-range, medium-to-large capacity transport suitable for transcontinental and international routes. Operating airlines included TWA, British Airways, Air Canada, and Japan Airlines, among others. The TriStar gained recognition for its advanced avionics, sophisticated flight systems, and spacious cabin configuration supporting 250-400 passengers depending on layout. Production ended in 1984 after 250 aircraft were built. While largely retired from passenger service, several TriStars remain active in cargo operations and military applications, valued for their payload capacity and proven engineering. The aircraft represents an important chapter in wide-body jet development and remains a respected platform among aviation enthusiasts and cargo operators worldwide.

Technical Specifications

Maximum Speed: Mach 0.92 (approximately 490 knots)
Cruise Speed: Mach 0.85 (approximately 460 knots)
Range: 4,750 nautical miles (L-1011-1); 6,000 nautical miles (L-1011-500)
Service Ceiling: 43,000 feet
Engines: 3 × Rolls-Royce RB211 turbofans (42,000 lbf each, L-1011-1)
Maximum Takeoff Weight: 496,000 lbs (L-1011-1); 510,000 lbs (L-1011-500)
Fuselage Length: 177 feet 8 inches
Wingspan: 155 feet 4 inches
Cabin Width: 19 feet 4 inches