Pan American
Pan American World Airways, originally founded as Pan American Airways and commonly known as Pan Am, was the principal and largest international air carrier and unofficial flag carrier of the United States from 1927 until its collapse on December 4, 1991. It was founded in 1927 as a scheduled airmail and passenger service operating between Key West, Florida, and Havana, Cuba. The airline is credited for many innovations that shaped the international airline industry, including the widespread use of jet aircraft, jumbo jets, and computerized reservation systems.