That's because it's a completely different livery! This is the 1976 scheme not the 1970 livery or the 1973 liveryThe "N742PA" also seems to have the title "PAN AM" larger than the first HX version with the shiny engines.
Changes were:
- Larger black PAN AM titles using the modified font with less spacing between the letters
- The blue cheatline terminating at the radome on the 747s
- Clipper titles in a script font
- The flag on the tail enlarged and slanted


