In CASA only section head MPS and Team Leaders, Airworthiness can issue a Maintenance Approval to a non LAME. That's the law.
You cannot get an MA from a LAME.
Even though Pilots in Australia have been removing and replacing controls for years without a maintenance approval they have been in conravention of the CAR's.
CASA has known about this for a long time but are now covering their proverbial after a recent event. The controls in this event were fitted by an engineer but that doen't matter.
There was some legislation written a few years ago to cover Robbies but it seems no-one can find it.