Authorities hope witnesses might be able to shed some light on the final moments of the flight that killed the men, aged 46 and 30, on Wednesday afternoon.
They had set off from the Sunshine Coast Airport. A search was launched about 5.30pm when they failed to return.
The wreckage of the two-seater Cessna A150 Aerobat was found three hours later, in bushland at Cedarton about 40km southwest of the airport.
The Australian Transport Safety Bureau has launched an investigation and wants to hear from anyone who saw the plane during any phase of its flight.
“A team of four transport safety investigators with expertise in aircraft operations, engineering and maintenance is deploying to the accident site on Thursday,” it said.
“They will examine the aircraft wreckage and site surrounds, and seek to recover any relevant components for detailed examination.”
The team will also review any recorded communications and will review the plane’s maintenance records.
The pilots were dead when the wreckage was found in a stand of trees just off Commissioners Flat Road.
Their bodies were recovered on Thursday morning.
Police say the plane was registered to the Sunshine Coast Aero Club which operates a flying school but would not say if was a training flight.
“It’s a tragic outcome for two people and their families, terrible,” Inspector Jason Overland told reporters on Thursday.
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