• Joint Memorandum Circular No. 2021-01 Violation of COVID-19-Related Directives
• MC 001-2021 Amendment to the Philippine Manual of Standards for Aerodromes (MOS-Aerodromes) Incorporating Amendment 9 to ICAO Annex 14 VOL. II and other Supplementary Amendments
• MC 002-2021 Amendment to Philippine Civil Aviation Regulations – Air Navigation Seevices (CAR-ANS) Part 3 Incorporating Amendment 79 to ICAO Annex 3 and other Supplementary Amendments
• MC 03-2021 CAAP Implementing Guidelines on the Joint Memorandum Circular No. 2021-01
• MC 05-2021 Guidelines for Carriage of Covid 19 Vaccines packed in Dry Ice by Air
• MC 06-2021 Amendment to the Philippine Manual of Standards for Aerodromes (MOS-Aerodromes) Incorporating Amendment 15 to ICAO Annex 14 Vol. I
• MC 07-2021 Validity of the Extended CAAP Issued Aircraft, Aircraft Material Distributor and Approved Maintenance Organization Certificates
• MC 08-2021 Validity of the Extended CAAP Issued Airmen Licenses
• MC 09-2021 Validity of the Extended CAAP Issued Air Operator Certificate, Validation of Foreign Air Operator Certificate, Dangerous Goods Certificate, RPAS Operator Certificate, Agricultural Aircraft Operator Certificate, Certificate of Authorization, Simulator Accreditation Certificate, Simulator Qualification Certificate and Cabin Crew Competency Certification