Chopper OZ
I have been looking around for the same answer, CASA have not answered me yet.
B1.1 is for turbine engine aircraft.
B1.2 is for Piston engine aircraft.
B1.2 was Airframe Group 3 and 4 under CAR30.
AC66-5 v1.2, June 2014, Appendix A states Airframe group 3 and 4 is now B1.2 and thay have the E9 and E10 exclusions.
I have asked CASA for the listing of any Turbine powered and Wooden structured aircraft in Australia.
I have all boeing and all airbus ratings on my CASA B1.1 licence. Stuffed if I can see whay I need a Fabric or Wood retardation added to my licence.
Anyone else get an answer from CASA?