In the context of barrettes, crossbars, and runway edge lights, when are lights considered adjacent laterally?

Lights are considered adjacent laterally if they are located consecutively in the same barrette or crossbar.

In the context of barrettes, crossbars, and runway edge lights, when are lights considered adjacent longitudinally?

Lights are considered adjacent longitudinally if they are located consecutively in the same row of edge lights or barrettes.

According to the guidance, is guidance lost if two adjacent unserviceable lights occur in a barrette or crossbar?

No, guidance is not lost by having two adjacent unserviceable lights in barrettes and crossbars.

GM3 ADR.OPS.C.015(b) Maintenance of visual aids and electrical systems

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GM3 ADR.OPS.C.015(b) Maintenance of visual aids and electrical systems

ED Decision 2021/003/R

LIGHTING SYSTEMS — SERVICEABILITY LEVELS

Serviceability levels are intended to define the maintenance performance level objectives.

With respect to barrettes, crossbars and runway edge lights, lights are considered adjacent if located consecutively and:

(a) laterally: in the same barrette or crossbar; or

(b) longitudinally: in the same row of edge lights or barrettes.

In barrettes and crossbars, guidance is not lost by having two adjacent unserviceable lights.

Further guidance on the development of preventive maintenance programme of lights is given in Chapter 2 of Part 9 ‘Airport Maintenance Practices’ of ICAO Doc 9137 ‘Airport Services Manual’.

Details

Source-Title: GM3 ADR.OPS.C.015(b) Maintenance of visual aids and electrical systems View latest amendments

Erulesid: ERULES-1963177438-18736 Compare versions

Domain: Aerodromes

Applicabilitydate: 5 March, 2021

Entryintoforcedate: 5 March, 2021

Regulatorysource: ED Decision 2021/003/R Navigate

Regulatorysubject: Part-ADR.OPS

Typeofcontent: GM to IR (Guidance material to implementing rule)

Origin: EASA

Category: EAR