Two pilots remain in hospital after a crash which has grounded the Royal Australian Air Force's aerobatic display squadron, the Roulettes.
The RAAF does not know what caused a PC-9A plane to crash at the East Sale base in Gippsland and has grounded its fleet of the aircraft pending an investigation.
The PC-9A is the only plane flown by the Roulettes, but the aircraft is also used to train other RAAF pilots.
The Australian Defence Force says the plane lost power while climbing from the runway, forcing the pilots to eject before it crashed in an open field beside the base.
The RAAF says the pilots were forced to eject when they realised the plane did not have the glide potential to reach the runway.
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