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UK-EU Transition

References to EU regulation or EU websites in our guidance will not be an accurate description of your obligations or rights under UK law.

Aircraft accidents and serious incidents

In the UK, aircraft accidents and serious incidents are investigated by the AIR Accidents Investigation Branch (AAIB) under the Department of Transport (DfT).

Definitions for aircraft accidents and incidents can be found in Regulations (EU) 996/2010.

You should report aircraft accidents and serious incidents directly to the AAIB.

Please visit the AAIB website or call their 24-hour number on 01252 512299.

Airprox incidents

The UK Airprox Board (UKAB) investigates Airprox. Airprox events which fulfil the criteria of being ‘… a near collision on the ground or in the air, with another aircraft ....’, as defined in Commission Implementing Regulation (EU) 2015/1018, should also be reported as a Mandatory Occurrence Report (MOR). Airprox involving Annex I aircraft should be reported to UKAB and may also be reported as a Voluntary Occurrence Report (VOR).

Information on how to submit a MOR, VOR and Airprox report is available in our occurrence reporting guidance and on the UKAB website.


You should follow the guidance on whistleblowing when:

  • you need to report an infringement of Article 16 of the EU Regulation 376/2014
  • you want to disclose sensitive information that you're not comfortable submitting on a MOR

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