CHAPTER H — OBSTACLE LIMITATION SURFACES
Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7 · Aerodromes · Regulation (EU) No 139/2014 · CS ADR-DSN.H.405 – CS ADR-DSN.H.460
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CS ADR-DSN.H.405 Applicability
Applicability: The purpose of the obstacle limitation surfaces is to define the airspace around aerodromes to be maintained free from obstacles so as to…
GM1 ADR-DSN.H.405 Applicability
The obstacle limitation surfaces define the limits to which objects may project into the airspace.
CS ADR-DSN.H.410 Outer horizontal surface
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GM1 ADR-DSN.H.410 Outer horizontal surface
The outer horizontal surface should extend from the periphery of the conical surface as shown in Figure GM-H-1.
CS ADR-DSN.H.415 Conical surface
Applicability: The purpose of the conical surface is to facilitate safe visual manoeuvring in the vicinity of the aerodrome.
GM1 ADR-DSN.H.415 Conical surface
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CS ADR-DSN.H.420 Inner horizontal surface
Applicability: The purpose of the inner horizontal surface is to protect airspace for visual manoeuvring prior to landing.
GM1 ADR-DSN.H.420 Inner horizontal surface
The shape of the inner horizontal surface need not necessarily be circular.
CS ADR-DSN.H.425 Approach surface
Applicability: The purpose of the approach surface is to protect an aircraft during the final approach to the runway by defining the area that should be…
GM1 ADR-DSN.H.425 Approach surface
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CS ADR-DSN.H.430 Transitional surface
Applicability: The purpose of the transitional surface is to define the limit of the area available for buildings, other structures or natural…
GM1 ADR-DSN.H.430 Transitional surface
When the elevation of a point on the lower edge is along the strip and equal to the elevation of the nearest point on the centre line of the runway or…
CS ADR-DSN.H.435 Take-off climb surface
Applicability: The purpose of the take-off climb surface is to protect an aircraft on take-off and during climb-out.
GM1 ADR-DSN.H.435 Take-off climb surface
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CS ADR-DSN.H.440 Slewed take-off climb surface
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GM1 ADR-DSN.H.440 Slewed take-off climb surface
The edge of a Take-off climb surface may be slewed in the direction of a turn away from the extended runway centre line up to a maximum of 15° splay.
CS ADR-DSN.H.445 Obstacle-free zone (OFZ)
An OFZ is intended to protect aeroplanes from fixed and mobile obstacles during Category II and III operations when approaches are continued below…
GM1 ADR-DSN.H.445 Obstacle-free zone (OFZ)
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CS ADR-DSN.H.450 Inner approach surface
Applicability: The purpose of the inner approach surface is to protect final precision approaches.
GM1 ADR-DSN.H.450 Inner approach surface
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CS ADR-DSN.H.455 Inner transitional surface
Applicability: The purpose of the inner transitional surface is to protect aeroplanes during precision approaches and balked landing.
GM1 ADR-DSN.H.455 Inner transitional surface
It is intended that the inner transitional surface be the controlling obstacle limitation surface for navigation aids, aircraft, and other vehicles that…
CS ADR-DSN.H.460 Balked landing surface
Applicability: The purpose of the balked landing surface is to protect balked landing.
GM1 ADR-DSN.H.460 Balked landing surface
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