Purpose of this change

This proposal is for a Permanent change to the notified airspace design, and the change level is 2C.

In order to facilitate the eventual removal and decommissioning of the LYD DVOR, the LYD 6R/ 5S SIDs from Stansted Airport will be removed. Traffic routeing via LYD will use the DET 1R/ 1S SIDs which are coincident with the LYD SIDs as far as DET.

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Step 7 : Post-Implementation Review

This step has been started

At the Post-Implementation Review Step, the CAA reviews how the airspace change has performed, including whether anticipated impacts and benefits in the original proposal and decision have been delivered.

Documents for this proposal (26 documents)

Post Implementation Review (445.4kB PDF)

Step 7 - PIR Report

Date added: 20 August 2025

Decision Document (702.9kB PDF)

Decide Gateway - Engagement Evidence

Date added: 22 April 2021

Environmental Assessment (15.3MB PDF)

Decide Gateway - Gateway Decision

Date added: 22 April 2021

Operational Assessment (8.9MB PDF)

Decide Gateway - Gateway Decision

Date added: 22 April 2021

Final Options Appraisal Assessment (6.7MB PDF)

Decide Gateway - Gateway Decision

Date added: 22 April 2021

Consultation Assessment (5.8MB PDF)

Decide Gateway - Gateway Decision

Date added: 22 April 2021

EGSS LYD SID ACP V1.2 (4.0MB PDF)

Step 4b - Airspace Change Proposal

Date added: 04 March 2021

EGSS LYD SID ACP V1.1 (7.0MB PDF)

Step 4b - Airspace Change Proposal

Date added: 16 February 2021

EGSS LYD SID ACP V1.0 (6.9MB PDF)

Step 4b - Airspace Change Proposal

Date added: 08 February 2021

EGSS LYD SID Revised Timeline 11-01-2021 (139.7kB PDF)

Step 4a - Timeline Agreement

Date added: 11 January 2021

EGSS LYD SIDS Stage 3D Consultation Collate and Review Responses (667.2kB PDF)

Step 3d - Categorisation of Responses

Date added: 22 December 2020

Multi-Gateway Options Appraisal (5.5MB PDF)

Step 2b - Other

Date added: 27 November 2020

Ref 4 - Stages 1-3 Engagement Evidence (redacted) V1.3 (1.4MB PDF)

Step 2a - Design Options

Date added: 19 November 2020

Ref 4 - Stages 1-3 Engagement Evidence (redacted) V1.2 (1.1MB PDF)

Step 2a - Engagement Evidence

Date added: 12 November 2020

Revised Timeline 12-11-2020 (144.5kB PDF)

Develop & Assess Gateway - Timeline Agreement

Date added: 12 November 2020

Decision Document (59.9kB PDF)

Develop & Assess Gateway - Gateway Decision

Date added: 05 November 2020

Ref 4 - Stages 1-3 Engagement Evidence (redacted) V1.1 (832.5kB PDF)

Step 1b - Engagement Evidence

Date added: 23 October 2020

Ref 4 - Stages 1-3 Engagement Evidence (redacted) (538.3kB PDF)

Step 1b - Engagement Evidence

Date added: 16 October 2020

EGSS LYD SIDS Removal - Assessment Meeting Slides (1.4MB PDF)

Step 1a - Other

Date added: 07 October 2020

EGSS LYD SIDS Removal - Assessment Meeting Minutes V1.1 (111.7kB PDF)

Step 1a - Assessment Meeting Minutes

Date added: 07 October 2020

EGSS LYD SIDS Removal - Assessment Meeting Agenda (574.2kB PDF)

Step 1a - Assessment Meeting Agenda

Date added: 30 September 2020

EGSS LYD SIDs Removal - Statement of Need (77.2kB PDF)

Step 1a - Statement of Need

Date added: 30 September 2020

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