The flight was reportedly on behalf of QantasLink - Qantas Airways - caused by the breakdown of one of the QantasLink aircraft that was due to operate the flight.
After unloading and then loading, VH-NKU departed back to Brisbane but as UTY2601.
Meanwhile, also spotted at Mackay Airport late on Wednesday 11 July and preparing for an overnight stay was Townsville-based NQ Heli-Worx (Meridian Helicopters) Aerospatiale AS350 B2 Squirrel helicopter VH-MHE.
Sincere thanks 'JM' for taking the time to capture and send through these great photos!
All photos taken by 'JM' ©