The C-17 was flying as "Stallion 50" and looked to fly out from RAAF Base Amberley to complete airwork off the South-East Queensland coast - possibly with RAAF Airbus A330-200 / KC-30A Multi Role Tanker Transport (MRTT) A39-004 "Gasser 70".
It then flew North and completed airwork at Bundaberg Airport before then flying back down to Amberley at low level and with no (radio) communication.
Meanwhile, also on Monday 21 February, RAAF Beech B350 Super King Air A32-675 looked to depart Hervey Bay (Fraser Coast) Airport for RAAF Base East Sale.
The Super King Air was flying as "Beaufort 16" and looked to arrive into Hervey Bay Airport from East Sale on Sunday 20 February.
Photo taken by Peter Sajko ©