Air Traffic Controllers can report an Alleged Breach of Air Navigation Legislation (ABANL) by completing the CA 939 form.
Examples of when a report may be required include, but are not limited to:
Please email the completed CA939 form to firstname.lastname@example.org or return it by post to address shown on the form.
Please note that the CA939 form is only for use by Air Traffic Controllers
Guidance for members of the public on how to report a potential breach of aviation law
Please ensure that the event is described with as much detail as possible.
Reports should include the following information where appropriate:
Detailed guidance for Air Traffic Controllers wishing to report an ABANL is available in Section 6 of CAP 493.
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