One of the problems with the new NPA in permitting an owner to approve his own maintenance schedule is that when the ARC is due for renewal, the Part M CAMO doing the ARC is responsible for ensuring the maintenance programme is correct. What do they check for correctness against? Also, if the Agency or its delegated NAA have no oversight of the maintenance programme, who addresses the disputes when the CAMO disagrees with the owner on what is the programme?