Published date: 2 February 2026

Purpose

This AC describes an acceptable means of compliance with recommended study material in respect of written examinations for Subject 20 (Air Law – Written).

Related rules

This AC relates specifically to Civil Aviation Rule Part 66 Subpart B - Aircraft Maintenance Engineer Licence.

Change notice

Revision 8 makes the following changes:

  • Amends the required study material publication list by removing references 29 and 36, and adjusting the numbering of the subsequent references
  • Updates Section 2.4, Incident Investigation, by adding references to forms CAA005i and CAA005D, and deleting the references for organisation failure definitions and selection of failure codes
  • Moves the content in Section 3.3 to Section 9.3
  • Amends some references in Sections 6.1, 6.2, 7.9 and 7.19
  • Deletes section 11.8, as this was not part of the transition from Part 19
  • Makes stylistic changes to ensure consistency in reference terminology.