On Wednesday 12 May, Mackellar Mining Equipment / Flight Options (Australia) Cessna 560 Citation Ultra bizjet VH-MMC departed Biloela / Thangool Airport for Emerald Airport. It had arrived at Bilo from its Sunshine Coast base the previous day.
After spending the day parked, VH-MMC departed Emerald Airport and returned to the Sunshine Coast.
Meanwhile, also on Wednesday 12 May, BK Hire (Toowoomba) Piper PA-31-350 Navajo VH-TTX arrived into Emerald Airport from Toowoomba before it then flew up to Collinsville Aerodrome. VH-TTX later returned to Emerald and then Toowoomba Airports.
This appears to be a weekly flight by the Navajo.
Finally, also on Wednesday 12 May, Machjet (Machjet International) Cessna 525A Citation CJ2 bizjet VH-ZIY was noted calling into Hamilton Island Airport. It looked to arrive from and later depart back to its Sunshine Coast base.