ADR.OPS.B.065 Visual aids and aerodrome electrical systems

GENERAL

(a)The aerodrome operator should establish a monitoring system of aerodrome ground lights so as to inform the air traffic services provider when safe operation is no longer possible.

(b)The aerodrome operator should establish procedures for the operation of visual aids and, in coordination with the air traffic services provider, procedures to be implemented in the event of unserviceability of stop bars. The procedures should cover the situation where the stop bars cannot be turned off because of a technical problem, and the measures to be taken should not undermine the principle that a lit stop bar must not be crossed.

(c)The aerodrome operator should establish procedures for the provision and removal of temporary markings, lights and signs.

UNSERVICEABILITY OF STOP BARS In situations where the stop bars cannot be turned off because of a technical problem, the following contingency measures may, inter alia, be considered:

(a)physically disconnecting the respective lit stop bar from its power supply;

(b)physically obscuring the lights of the lit stop bar; and

(c)using a different route, until the malfunctioning system has been repaired. In case of implementation of (a) or (b), a marshaller or a follow-me vehicle may need to be provided to lead the aircraft to cross the stop bar. Moreover, in case of implementation of (b), care is necessary to ensure correct implementation of the measure to avoid misunderstandings by the flight crew. In any case, the measures taken do not undermine the principle that a lit stop bar must not be crossed, while maintenance action needs to be taken as soon as possible.