Originally Posted by
werbil
Section 7AA of CASA EX82/21 – Part 119 of CASR – Supplementary Exemptions and Directions Instrument 2021 is where you need to look.
If the operation meets ALL of the requirements listed above it can be flown under Part 91.
But that assumes Part 119 applies in the first place.
If an operation isn't an "air transport operation" as defined, Part 119 does not apply.