These were also operated by the 747SP, but, rather than being flown by United, Pan Am was the airline. The first of these was known as the Liberty Bell Express, and departed from Pan Am's hub at ...
The unique 747SP was introduced for long-haul flights, with a top speed over 621 mph for quicker journeys. The iconic Boeing 747 may not be the fastest, as it falls behind the Airbus A380 and ...