Two Piper Navajo Chieftain's operated by Business Air Services from Rotterdam visited Cranfield that day.

The airframe was built in 1976 and the registration PH-BAA was cancelled in August 1980 and the aircraft became N805PC, C-GBHM and eventually N4231V. The middle aircraft, PH-BAS carries c/n 31-7305043. This one also got cancelled in August 1980 and became N804PC and N84859, but was unfortunately written off on December 15, 2000. The third aircraft is the PH-SAV and has c/n 31-7652056. The registration got cancelled in 2006 and it became G-CEBK. Both the -BAA and -SAV are still in service to date!