Had to pick up the Mrs, so with thanks to above message I made sure I arrived earlier and have a bit of extra time to drive around the airport.
Noted between 1700/1800hrs:
Melsbroek:
CT04, 05 and 01 arrived around 1730hrs
A (dark)grey Falcon was seen between the hangars but couldn't get a serial. Anyone perhaps know which one?
There was also a Belgium Falcon, not required.