Original: On 5 September 1986 a Pan American World Airways Boeing 747-121 named Clipper Empress of the Seas , operating as Pan Am Flight 73 , was hijacked by Palestinian gunmen posing as airport officials upon arrival from Bombay , India .
Simplified: A Pan American Boeing 747 named the Clipper Empress of the Seas , called Pan Am Flight 73 , was hijacked on September 5 , 1986 .