Boeing 747-100

Quad Jet· 5 globally registered

The Boeing 747-100 was the world's first widebody airliner and the first twin-aisle jet, revolutionizing long-haul air travel when it entered service with Pan Am in 1970. With its distinctive humpbacked upper deck and four high-bypass turbofan engines, the 747 could carry more than twice as many passengers as any previous airliner, slashing the cost per seat-mile and making intercontinental travel accessible to millions. The original -100 variant had a maximum takeoff weight of 735,000 pounds and a range exceeding 5,300 nautical miles, enabling nonstop transoceanic routes that were previously impossible or uneconomical. Its cavernous fuselage and high-mounted wing made it ideal for cargo operations, and the type quickly became the backbone of global freight networks. The 747's performance envelope was equally impressive for its era: a maximum operating speed of Mach 0.92 and a service ceiling of 45,000 feet, allowing it to cruise above most weather and traffic. While the -100 was soon superseded by longer-range and higher-capacity variants, it remained in specialized service for decades. NASA famously converted two 747-100SR airframes into Shuttle Carrier Aircraft, mounting the Space Shuttle orbiter atop the fuselage for ferry flights between landing sites and Kennedy Space Center—a role that required structural reinforcement and unique handling characteristics but showcased the 747's versatility. SkyMeter has tracked 15 flights across 1 airframes and 1 operators, with NATIONAL AERONAUTICS AND SPACE ADMINISTRATION the largest observed operator.