Extract from the proposed draft regs relation to operation of aircraft involved in parachute ops
General Conditions
6.1 A drop aircraft when dropping parachutists must be operated in accordance with the APF Jump Pilot’s Handbook.
6.2 A pilot in command of a drop aircraft must hold an APF Jump Pilot’s Certificate.
6.3 A drop aircraft that is not a Class A aircraft must be maintained as if it were a Class B charter aircraft and must have a current maintenance release issued in that category.
6.4 Applications for exemptions to carry fire extinguishes may be made for certain type aircraft i.e. C172, C182, C206
6.5 Any alteration of the APF Jump Pilot’s Handbook must be notified to CASA for acceptance.
6.6 If CASA does not accept the alteration, it must notify the APF.
There is a fair bit more to the doc but mostly it's about making the pilot responsible for jump operations & hence how they can screw the pilot in the event something goes wrong