Scale Z
(i) An emergency lighting system to provide illumination in the passenger compartment sufficient to facilitate the evacuation of the aircraft notwithstanding the failure of the lighting systems specified in paragraph (ii) of Scale G.
(ii) An emergency lighting system to provide illumination outside the aircraft sufficient to facilitate the evacuation of the aircraft.
(iii) (a) Subject to sub-paragraph (b), an emergency floor path lighting system in the passenger compartment sufficient to facilitate the evacuation of the aircraft notwithstanding the failure of the lighting systems specified in paragraph (ii) of Scale G.
(b)If the equipment specified in sub-paragraph (a) becomes unserviceable the aircraft may fly or continue to fly in accordance with arrangements approved by the Authority.