FS98 Continental/PSA Boeing 727-51 N974PS version 1.0 Original 727-100 by Brian Quayle/Steve Kempf/Francesco Zoja Repaint moving parts and landing lights by: Jason R. DeCesare. Special thanks to: Francesco Zoja PSA Boeing 727-51 C/n: 18798 Registration: N974PS A former Northwest Airlines 727-51, this aircraft is in late 1970s PSA livery complete with smile.