The guidelines from Maritime Safety Queensland as follows:
Inflatable PFDs (life jackets)
Inflatable life jackets are approved equipment. They must be gas inflated and not rely on oral inflation only.
Inflatable PFDs used on a recreational boat must show an expiry date and be serviced by the manufacturer or authorised service centre annually.
Alternatively, where the manufacturer has established a documented servicing program the owner or master can service the PFD themselves, providing they can produce documentary evidence showing adherence to the servicing program.
http://www.msq.qld.gov.au/Safety/Lif...n-devices.aspx
Frequently Answered Questions:
http://www.msq.qld.gov.au/~/media/31...t_pfd_faqs.pdf