We use necessary cookies to make our website work. We'd also like to use optional cookies to understand how you use it, and to help us improve it.

For more information, please read our cookie policy.

UK Civil Aviation Regulations

These are published by the CAA on our UK Regulations pages. EU Regulations and EASA Access Guides published by EASA no longer apply in the UK. Our website and publications are being reviewed to update all references. Any references to EU law and EASA Access guides should be disregarded and where applicable the equivalent UK versions referred to instead.

UK Reg (EU) No 139/2014 requires any change affecting the Terms of Certificate, it’s Certification Basis and Safety Critical Aerodrome Equipment; or changes that significantly affect elements of the aerodrome operators management system to be notified to the CAA. Some changes will require approval by the CAA before they can be implemented.

For more information see UK Reg (EU) No 139/2014 ADR.OR.B.040 Changes

Changes that need approval

Management System

You need approval for changes that 'significantly' affect elements of your management system, including your Safety Management System.1

We define these changes as 'significant' if they affect:

  • the organisation chart
  • policies
  • safety culture2


  1. ADR.OR.B.040(a)(2)
  2. ADR.OR.D.005(b)(1)&(2)
Close Management System

Terms of the Certificate

Changes to the operation that might change the terms of the certificate include:

  • changes to the permanent level of protection of rescue and firefighting
  • changes to low visibility procedures
  • changes to the declared distances
  • changes to the aerodrome coding
  • changes to the Higher Code Aircraft (as applicable).
Close Terms of the Certificate

Certification Basis (CB)

Any changes that impact the CB need our approval, including:

  • constructions affecting sightlines from VCR
  • developments on the movement are (e.g. new aprons)
  • developments which might impact on the movement area (e.g. new or extensions to terminals or piers)

Note: Significant maintenance projects can have a secondary effect on the Certification Basis. If you're not sure if a maintenance project needs prior approval, notify your Aerodrome Inspector who can advise you.

Supporting documentation

When you apply for CB changes you need to include supporting documentation. Full details are in CAP 791, including a process for notifying us.


  1. ADR.OR.B.040
  2. ADR.OPS.B.070
Close Certification Basis (CB)


You also need to apply for approval for the following:

  • changes that make use of an Alternative Means of Compliance
  • changes to procedure that describe how changes not requiring prior approval are managed.


Close Other

How much does it cost?

Please note that some changes (e.g. major developments) may incur a charge. For details please see our Scheme of Charges.

Close How much does it cost?

How do I apply?

Complete SRG 2011 online

Make sure you submit the form at least 30 days before the proposed change.

Close How do I apply?

Contact us

Email: developments@caa.co.uk