What Philthy has stated is just the tip of the ice berg,
For example, picture this:
two Cessna 310's side by side, one is Class A and the other Class B maintained.
The Class A Cessna is used on a RPT service one day per week and charter the rest of the week, in and out of, lets say alice springs to service cattle stations and aboriginal communities.
The company that operates the RPT aicraft is to be required to have a company security officer ( ie a nominated company pilot ) and a " Security Management Plan ", even though they operate from a secure airport and is the exact same aircraft type.
In addition there has been no consultation of effected partys, ie the operators.
I seriously doubt locking/chaining an aircraft will even stop a pissed idiot on a dare.