It touched down from Brisbane.
At the time of writing, it appears that VH-SGY is remaining at Hervey Bay at least the night.
UPDATE! On Thursday 23 July, VH-SGY departed Hervey Bay (Fraser Coast) Airport for Brisbane.
Meanwhile, at Bundaberg Airport, the locally-based Greensill Aviation Cessna 550 Citation Bravo bizjet VH-CCJ was noted flying out to Sydney on Tuesday 21 July and back to Bundy on Wednesday 22 July.
Photo taken by Steve Vit ©