Post published:February 2, 2014Post category:747SP / Boeing 747 / Pan AmPost comments:0 Comments Pan Am Clipper Constitution SP. SP stands for “Special Performance” Capable of very long-range flying when introduced. Boeing’s answer to the DC-10 and L1011 – Special Thanks Dave Hunt Share This Tags: 1970s, stewardess You Might Also Like Clipper Freedom, B747SP December 30, 2015 Flight Experience: Pan Am B747 London to Los Angeles 1986 June 29, 2020 Pan Am Soaps March 17, 2016Leave a ReplyYou must be logged in to post a comment.