CS ADR-DSN.M.670 Runway threshold identification lights

(a)Applicability:

(1)The inclusion of specifications for runway threshold identification lights is not intended to imply that the runway threshold identification lights have to be provided at an aerodrome.

(2)Where provided, runway threshold identification lights should be installed:

(i)at the threshold of a non-precision approach runway when additional threshold conspicuity is necessary or where it is not practicable to provide other approach lighting aids; and

(ii)where a runway threshold is permanently displaced from the runway extremity or temporarily displaced from the normal position and additional threshold conspicuity is necessary.

(b)Location: Runway threshold identification lights should be located symmetrically about the runway centre line, in line with the threshold and approximately 10 m outside each line of runway edge lights.

(c)Characteristics:

(1)Runway threshold identification lights should be flashing white lights with a flash frequency between 60 and 120 per minute;

(2)The lights should be visible only in the direction of approach to the runway.

[Issue: ADR-DSN/4]