It appears that the Dash-8-100 was operating a closed sports charter with the Cairns Marlins noted to be playing at Rockhampton and Gladstone over the weekend in the Queensland Basketball League (QBL).
VH-QQI returned to Cairns from Gladstone Airport on Sunday 17 June again as SKP9210.
Of interest, VH-QQI was recently rolled out wearing the new Skytrans livery after being noted in storage at Cairns Airport in the airlines' older style livery.
And last week, the airline announced the introduction of their recently assigned, official airline designator code 'QN'. Previous reference codes used were SKP (ICAO code) and Q6 (code for the previous Skytrans business).