Pan American Airways (Pan Am) was active in the airline industry from 1927, when it established a regular scheduled international service, to its bankruptcy in late 1991. Pan Am was the first American airline to operate a permanent international air service. From its first route between Key West and Havana, Pan Am extended its routes into the rest of the Caribbean, Central America and South America. In 1936, Pan Am inaugurated passenger service in the Pacific, and began service in the Atlantic in 1939. Pan Am started around-the-world commercial air service in 1947. Besides establishing many "firsts" with routes, Pan Am also set "firsts" in aircraft technology, as when they became the first to use Boeing 747s in regular scheduled services.