SERA.3215 Lights to be displayed by aircraft

(a)Except as provided by (e), at night all aircraft in flight shall display:

(1)anti-collision lights intended to attract attention to the aircraft; and

(2)except for balloons, navigation lights intended to indicate the relative path of the aircraft to an observer. Other lights shall not be displayed if they are likely to be mistaken for these lights.

(b)Except as provided by (e), at night:

(1)all aircraft moving on the movement area of an aerodrome shall display navigation lights intended to indicate the relative path of the aircraft to an observer and other lights shall not be displayed if they are likely to be mistaken for these lights;

(2)unless stationary and otherwise adequately illuminated, all aircraft on the movement area of an aerodrome shall display lights intended to indicate the extremities of their structure, as far as practicable;

(3)all aircraft taxiing or being towed on the movement area of an aerodrome shall display lights intended to attract attention to the aircraft; and

(4)all aircraft on the movement area of an aerodrome whose engines are running shall display lights which indicate that fact.

(c)Except as provided by (e), all aircraft in flight and fitted with anti-collision lights to meet the requirement of (a)(1) shall display such lights also during day.

(d)Except as provided by (e), all aircraft:

(1)taxiing or being towed on the movement area of an aerodrome and fitted with anti-collision lights, to meet the requirement of (b)(3); or

(2)on the movement area of an aerodrome and fitted with lights to meet the requirement of (b)(4); shall display such lights also during day.

(e)A pilot shall be permitted to switch off or reduce the intensity of any flashing lights fitted to meet the requirements of (a), (b), (c) and (d) if they do or are likely to:

(1)adversely affect the satisfactory performance of duties; or

(2)subject an outside observer to harmful dazzle.