Authorities will continue to probe the cause of a fatal crop duster crash in southern Queensland, after a preliminary report failed to find anything out of the ordinary.
The Australian Transport Safety Bureau (ATSB) has been looking into the July 19 crash on a cotton station about 22km south-west of Dirranbandi, which killed the pilot.
The PZL Warszawa-Okecie M-18 Dromader was spraying when it failed to return from a flight, and workers found the wreckage in a ploughed field.
The pilot was alone in the plane but had earlier been carrying a passenger who had been responsible for mixing the spraying chemicals and re-fuelling the aircraft.
The ATSB preliminary report, released on Thursday, says all of the aircraft's primary structure and flight controls were found within the accident site, and there was no evidence of fire.
"There were no anomalies identified with the aircraft's flight control systems," the ATSB reports.
"There was also no evidence of birdstrike or previous impact with ground obstacles."
The investigation will continue.