EASA MIP
The recently introduced MIP only apply to ELA1 aircraft - those below 1200Kg. A typical C182P is certified at 1338Kg so can't go onto MIP and therefore needs to stay within a Part M environment to get it's ARC issued or renewed. As a consequence, GA maintenance companies can't make the savings in regulatory fees by dropping Part M and just having ARC privileges on their Part 145 unless they only maintain the lighter weight aircraft. There are rumours that MIP will be extended to ELA2 aircraft - those below 2000Kg, but no dates yet published that I'm aware of.