In a message dated 8/4/2003 6:37:17 PM Pacific Daylight Time, jmgammon@xxxxxxxxxxxx writes: << The 747SP was really a shortened, longer-range version of the 100. The later -200 versions essentially killed off the SP, which then became uneconomic. It was a specialized product for very long range services and only a handful were made. But at the time, it was a brilliant aircraft. >> The SP came out after the 200. It was still needed for many services until the 744 came out