Information about Impact of changing flight operations regulations Learn how the new rules effect operational category terminology and minimum equipment lists (MEL) for aircraft. Elect to manage continuing airworthiness Find out how Part 42 is used from charter and aerial work who voluntarily elect a CAMO. Interim changes to D rating approvals Learn about interim measures for how we handle specialist maintenance and D3 rating approval applications. Writing an exposition Learn if you need to submit an exposition. What it should contain and how they're assessed. Research and technical papers Read our library of research and technical papers on airworthiness. Also see CASR Part 66 Learn about the requirements for appropriate use of aircraft maintenance engineer licences and ratings. CASR Part 145 Learn about approved maintenance personnel and organisations and the performance of maintenance certifications. CASR Part 147 Learn about maintenance training organisations, including licenses, ratings and certifications.