• Advisory Circular No. 01-2021: Interim Alternative Means of Compliance (AMOC) for General Aviation Aircraft Installed with Fixed-Pitch Propeller in Compliance with MC No. 34-2020
• Advisory Circular No. 02-2021: Revised Interim Alternative Means of Compliance (AMOC) with the Memorandum Circular No. 34-2020
• Advisory Circular No. 03-2021: Extended Compliance Period for Memorandum Circular No. 34-2020 Under an Interim Alternative Means of Compliance (AMOC)