This document outlines the revisions made to CAR M Continuing Airworthiness Requirements. Revision 1, effective June 2015, was issued to harmonize CAR M with EASA regulations issued after 2010. Key changes include separating appendices, replacing pre-CAR 66 terminology, introducing requirements for critical design configuration control limitations and key risk elements, enhancing the scope of components and defect rectification, and adding new AMC and GM for aircraft continuing airworthiness monitoring and fuel tank safety training.