The driver held the appropriate certificate from an appropriate FTF and the rego situation was purely the mis-reading of an S as a 5. He had flown into Old Bar on previous occasions and most recently only a short interval before the day of the prang.. that much is now known.
Kaz3g,
From
https://www.casa.gov.au/sites/g/file...ef12-10136.pdf (CASA audit files of RAAus), on page 45, it says:
The ... (ATSB) requested registration details of this aircraft <redacted> from RA-Aus at the time of the accident and it was found that the aircraft was not registered at the time.