GM1 ADR.OPS.B.071(a)(2) Closed runways and taxiways, or parts thereof

Q: What should be done to closed runway or taxiway markings when there is insufficient contrast between the marking colour and the surface colour, for example due to construction material colour?

The closed runway or taxiway markings need to be included in an appropriate border whose colour is black.

Q: Why might closed runway or taxiway markings fail to fulfil their purpose even if they conform to applicable specifications?

Because in certain circumstances, such as due to the colour of the material used during construction works, there may be insufficient contrast between the colour of the surface of the runway or taxiway and the colour of the respective closed runway or taxiway marking, which may result in the markings not fulfilling their purpose.

Q: At aerodromes where night operations take place, what material should closed runway or taxiway markings be made of, and where is guidance on such materials provided?

The closed runway or taxiway markings should be made with reflective materials designed to enhance their visibility. Guidance on reflective materials is given in Part 4 'Visual Aids' of ICAO Doc 9157 'Aerodrome Design Manual'.

Q: According to GM1 ADR.OPS.B.071(a)(2), what is the specific condition that triggers the need for a black border around closed runway or taxiway markings?

The condition is when there is insufficient contrast between the colour of the surface of the runway or taxiway and the colour of the respective closed runway or taxiway marking, even though the marking conforms to applicable specifications.

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GM1 ADR.OPS.B.071(a)(2) Closed runways and taxiways, or parts thereof

ED Decision 2024/004/R

CLOSED RUNWAY AND TAXIWAY MARKINGS — AVOIDING THE LACK OF CONTRAST

(a) In certain circumstances, e.g. due to the colour of the material used during construction works, there may be insufficient contrast between the colour of the surface of the runway or taxiway and the colour of the respective closed runway or taxiway marking, even though the latter conforms to the applicable specifications.

This may result in the closed runway or taxiway markings not fulfilling their purpose. To avoid the lack of contrast, the closed runway or taxiway markings need to be included in an appropriate border, whose colour is black.

(b) At aerodromes where operations take place at night, the closed runway or taxiway markings would be made with reflective materials designed to enhance their visibility. Guidance on reflective materials is given in Part 4 ‘Visual Aids’ of ICAO Doc 9157 ‘Aerodrome Design Manual’.

Details

Source-Title: GM1 ADR.OPS.B.071(a)(2) Closed runways and taxiways, or parts thereof View latest amendments

Erulesid: ERULES-1963177438-22807 Compare versions

Domain: Aerodromes

Applicabilitydate: 24 May, 2025

Entryintoforcedate: 20 June, 2024

Regulatorysource: ED Decision 2024/004/R Navigate

Regulatorysubject: Part-ADR.OPS

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

Parentir: ADR.OPS.B.071 Closed runways and taxiways, or parts thereof

Origin: EASA

Category: EAR