CS ADR-DSN.M.706 Runway status lights (RWSL)

(a)Applicability:

(1)The inclusion of detailed specification for RWSL is not intended to imply that RWSL have to be provided at an aerodrome.

(2)RWSL is a type of autonomous runway incursion warning system (see CS ADR-DSN.T.921), consisting of two basic visual components: runway entrance lights (RELs) and take-off hold lights (THLs). The two components can be installed individually, but are designed to complement each other.

(b)Location:

(1)Where provided, RELs should be offset 0.6 m from the taxiway centre line on the opposite side to the taxiway centre line lights and begin 0.6 m before the runway-holding position extending to the edge of the runway. An additional single light should be placed on the runway 0.6 m from the runway centre line and aligned with the last two taxiway RELs.

(2)RELs should consist of at least five light units and should be spaced at a minimum of 3.8 m and a maximum of 15.2 m longitudinally, depending upon the taxiway length involved, except for a single light installed near the runway centre line.

(3)Where provided, THLs should be offset 1.8 m on each side of the runway centre line lights and extend, in pairs, starting at a point 115 m from the beginning of the runway and, thereafter, every 30 m for at least 450 m.

(c)Characteristics:

(1)Where provided, RELs should consist of a single line of fixed in pavement lights showing red in the direction of aircraft approaching the runway.

(2)RELs should illuminate as an array at each taxiway/runway intersection where they are installed less than two seconds after the system determines that a warning is needed.

(3)RELs intensity and beam spread should be in accordance with the specifications of Chapter U, Figures U-16 and U-18.

(4)Where provided, THLs should consist of two rows of fixed in pavement lights showing red facing the aircraft taking off.

(5)THLs should illuminate as an array on the runway less than two seconds after the system determines that a warning is needed.

(6)THLs intensity and beam spread should be in accordance with the specifications of Chapter U, Figure U-29.

(7)RELs and THLs should be automated to the extent that the only control over each system will be to disable one or both systems.

[Issue: ADR-DSN/4]