On the General Aviation & Questions thread there has been discussion about compass swings and what the regulations are in various countries - see
HERE.
It’s claimed that in New Zealand a compass must be swung every twenty-four months. Can anyone advise if this also applies to a VFR helicopter? And does that mean the helicopter must be put into the air and hovered whilst the measurements are taken and that this must be performed every twenty-four months even if it is obvious that the compass has no faults and is accurate?