And it's airborne: https://www.flightradar24.com/ABB851/11a1429d
The first (or second*) commercial flight of Air Belgium towards Hong Kong is airborne and underway! Air Belgium held some festivities at the airport of Charleroi (see: https://twitter.com/airbelgium_off) and only few minutes ago, the first commercial"* AB-flight towards Hong Kong left Charleroi/Brussels South Airport.
* Air Belgium did fly last Sunday to Hong Kong. It was also flight ABB851. On board were only 15 passengers, but mr. Terzakis said then that it was only "a technical flight" to test everything and make sure that everything is going smooth today.