GM1 ADR.OPS.C.015(b)

• ED Decision 2021/003/R found in: Aerodromes (139/2014) Part-ADR.AR Part-ADR.OR Part-ADR.OPS CS-ADR-DSN CS-HPT-DSN (Jun 2023)

GM1 ADR.OPS.C.015(b);(c) Maintenance of visual aids and electrical systems ED Decision 2021/003/R UNSERVICEABLE LIGHTS CS ADR-DSN.U.940‘Aeronautical ground light characteristics’ contains the figures for determining the unserviceability of individual lights. The aerodrome operator needs, however, to consider defining, as part of its maintenance programme, two levels of intensity for individual lights, i.e. a maintenance level and the unserviceability level. The higher level gives aerodrome maintenance personnel advance warning that a light unit is beginning to produce an output significantly below the required value. This level is always above 50 per cent of the specified intensity, which is the level at which the light is classified as being outside specification tolerance and therefore to have failed from an operational perspective. Once the light output reaches the maintenance level, corrective action can be scheduled. This prevents lights from losing performance to the level where immediate maintenance action must be taken. GM1 ADR.OPS.C.015(b);(c) Maintenance of visual aids and electrical systems ED Decision 2021/003/R UNSERVICEABLE LIGHTS CS ADR-DSN.U.940‘Aeronautical ground light characteristics’ contains the figures for determining the unserviceability of individual lights. The aerodrome operator needs, however, to consider defining, as part of its maintenance programme, two levels of intensity for individual lights, i.e. a maintenance level and the unserviceability level. The higher level gives aerodrome maintenance personnel advance warning that a light unit is beginning to produce an output significantly below the required value. This level is always above 50 per cent of the specified intensity, which is the level at which the light is classified as being outside specification tolerance and therefore to have failed from an operational perspective. Once the light output reaches the maintenance level, corrective action can be scheduled. This prevents lights from losing performance to the level where immediate maintenance action must be taken. ##### GM1 ADR.OPS.C.015(b);(c) Maintenance of visual aids and electrical systems *ED Decision 2021/003/R* **UNSERVICEABLE LIGHTS** CS ADR-DSN.U.940 ‘Aeronautical ground light characteristics’ contains the figures for determining the unserviceability of individual lights. The aerodrome operator needs, however, to consider defining, as part of its maintenance programme, two levels of intensity for individual lights, i.e. a maintenance level and the unserviceability level. The higher level gives aerodrome maintenance personnel advance warning that a light unit is beginning to produce an output significantly below the required value. This level is always above 50 per cent of the specified intensity, which is the level at which the light is classified as being outside specification tolerance and therefore to have failed from an operational perspective. Once the light output reaches the maintenance level, corrective action can be scheduled. This prevents lights from losing performance to the level where immediate maintenance action must be taken.