This Challenger was used for airways calibration across Canada. First with Transport Canada, the aircraft transferred to Nav Canada when Canada's civil airways system was privatized in 1996. It was later operated by the Province of Quebec from 2009 - 2015.

First visit of a Challenger to Leeuwarden AB.

First flown as N1785B - April 21, 1975 Entered onto the Australian Aircraft Register as VH-EBJ - May 30, 1975 .Registered to Qantas. The aircraft was named "City of Geelong'". It was repainted in the Air Pacific livery in Paris in May 1989. this 747 was also registered N158UA, YA-EAH in Feb.2003 3D-BOX Dec. 2003 EK-74702 in Jakarta Feb 2006 and J2-LBB in August 2007