Who is responsible for supplying the PLB?
Since all club EASA aircraft (that do not have ELTs) will be required to be equipped with PLBs soon, I would liken that to the First Aid Kit and the Fire Extinguisher. That is; a portable unit that must be carried. As far as I can ascertain the owner or the operator is responsible for equipping the aircraft with such items but the PIC must only ensure that they are in fact on board. If this were not the case I'd need another flight case for these items.
Opinions please!