CAT.IDE.A.115 Operating lights

(a) Aeroplanes operated by day shall be equipped with:

(1)  an anti-collision light system;

(2)  lighting supplied from the aeroplane’s electrical system to provide adequate illumination for all instruments and equipment essential to the safe operation of the aeroplane;

(3)  lighting supplied from the aeroplane’s electrical system to provide illumination in all passenger compartments; and

(4)  an independent portable light for each required crew member readily accessible to crew members when seated at their designated stations.

(b) Aeroplanes operated at night shall in addition be equipped with:

(1)  navigation/position lights;

(2)  two landing lights or a single light having two separately energised filaments; and

(3)  lights to conform with the International Regulations for Preventing Collisions at Sea if the aeroplane is operated as a seaplane.