In 1980, Pan Am significantly upgraded its first class cabins on its Boeing 747 and 747SP aircraft by introducing Sleeperette ...
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 first 747SP to meet the scrapyard was in December 1997. By 2007, there were a mere 17 of them in operation. As of 2022, there were a total of four 747SPs still in service. The famous engine ...