It would be interesting to see the statistics this is based on, and where Jabiru actually ranks in risk against other aircraft.
More, or less engine failure related deaths per hour than the Piper Navajo?
More, or less engine failure related deaths per hour than the piston engine fleet average?
More, or less engine failure related deaths per hour than from Robinson fuel tanks?
Interesting too that this comes so close to the implementation of the RPL, where CASA are basically offering RAA pilots equivalent licenses to fly GA aircraft.
What percentage of the RAA fleet has Jabiru engines? What percentage of the training fleet? If half your schools go broke because they can't send students solo for 6 months, and half your pilots switch to GA because they can't take a passenger in their Jabiru, it must endanger RAA in general. In that case, the cost of this could run into the hundreds of millions in failed businesses and loss of aircraft value.
I hope CASA have the (statistically significant) evidence to back it up.