What should be done with objects that do not penetrate the approach surface but could still harm the optimal placement or functioning of visual or non-visual aids?

They should be removed as far as practicable (CS ADR-DSN.J.486(a)).

Under what condition should an object be considered an obstacle and removed if it is within the limits of the inner horizontal and conical surfaces?

If, after a safety assessment, it could endanger aeroplanes on the movement area or in the air within those surfaces, it should be regarded as an obstacle and removed in so far as practicable (CS ADR-DSN.J.486(b)).

According to CS ADR-DSN.J.486, what is the required action for objects that do not project through the approach surface but adversely affect the optimum siting or performance of visual or non-visual aids?

Such objects should be removed as far as practicable (CS ADR-DSN.J.486(a)).

What is the criterion for classifying an object as an obstacle under CS ADR-DSN.J.486(b)?

An object is regarded as an obstacle if, after a safety assessment, it may endanger aeroplanes on the movement area or in the air within the limits of the inner horizontal and conical surfaces.

CS ADR-DSN.J.486 Other objects

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CS ADR-DSN.J.486 Other objects

ED Decision 2016/027/R

(a) Objects which do not project through the approach surface but which would nevertheless adversely affect the optimum siting or performance of visual or non-visual aids should, as far as practicable, be removed.

(b) Anything which may, after a safety assessment, endanger aeroplanes on the movement area or in the air within the limits of the inner horizontal and conical surfaces should be regarded as an obstacle and should be removed in so far as practicable.

[Issue: ADR-DSN/3]

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Source-Title: CS ADR-DSN.J.486 Other objects View latest amendments

Erulesid: ERULES-1963177438-2240 Compare versions

Domain: Aerodromes

Activitytype: Aerodrome operations, Aerodrome design, Manufacturing

Amendedby: CS Issue 3

Applicabilitydate: 15 December, 2016

Entryintoforcedate: 14 December, 2016

Icaoreference: Annex 14, Volume I

Regulatedentity: Aerodrome operator, Aerodrome design organisation, Aerodrome equipment manufacturer

Regulatorysource: ED Decision 2016/027/R Navigate

Regulatorysubject: CS-ADR-DSN

Technicalsubjectmatter: Obstacle limitation surfaces/requirements

Typeofcontent: CS (Certification specification)

Easacategory: Non-instrument runway, Non-precision approach runway, Precision approach runway Category I, Precision approach runway Category II, Precision approach runway Category III, Take-off runway

Origin: EASA

Category: EAR

CS ADR-DSN.J.486 Other objects

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