• MC 01-2020 Amendment to Philippine Civil Aviation Regulations Part 7
• MC 04-2020 Amendment to MOS - Aerodromes
• MC 05-2020 Amendment to Philippine Civil Aviation Regulation - Air Navigation Services (CAR-ANS) Part 6 (Aeronautical Telecommunications Governing Radio Navigation Aids) Incorporating Amendment 91 to Annex 10 Volume 1
• MC 06-2020 Mandatory Submission of General Declaration and Health Forms
• MC 07-2020 Incorporation of Electronic Flight Bag Regulations to Philippine Civil Aviation Regulations Part 7
• MC 08-2020 Amendment to CAR - Aerodromes
• MC 10-2020 Extending the Validity of CAAP issued Airmen Licenses and Certificate
• MC 14-2020 Addendum to Memorandum Circular No. 10-2020 Dated 13 March 2020 Re: Extending the Validity of CAAP issued Airmen Licenses and Certificate
• MC 17-2020 Amendments to the Philippine Civil Aviation Regulations Parts 3, 6, 7, 8 and 9, re: Rectifying Typographical Errors
• MC 18-2020 Guideline for the Resumption of Operations of Approved Training Organization under General Community Quarantine Period (GCQ)
• MC 19-2020 Amendment to Philippine Civil Aviation Regulations Part 8
• MC 20-2020 Amendment to Philippine Civil Aviation Regulations Part 2 Re: Air Traffic Controller Categories/Ratings
• MC 21-2020 Implementing a Public Health Corridor to Protect Flight Crew during the Covid-19 Pandemic
• MC 24-2020 Resumption of Aviation Medical Examination and Assessment
• MC 27-2020 for the Adoption of Amendment 61 to ICAO Annex 4
• MC 28-2020 Adoption of Amendment 41 to ICAO Annex 15
• MC 29-2020 Amendment to Philippine Civil Aviation Regulations - Air Navigation Services (CAR-ANS) Part 2 Adopting Amendment 92 to ICAO Annex 10 Vol. 2 - Governing Aeronautical Telecommunications Communication Procedures including those with PANS Status
• MC 30-2020 Amendment to Philippine Civil Aviation Regulations - Air Navigation Services (CAR-ANS) Part 11 Adopting Amendment 52 to ICAO Annex 11 - Air Traffic Services and Supplemental Amendments
• MC 32-2020 Promulgating the Implementing Rules and Regulations for the Assistance Program to Assist Critically-Impacted Businesses in the Aviation Sector
• MC 34-2020 Recall of all Types of Propellers Maintained by Manila Aircraft Propeller Services, Inc. (MAPSI)
• MC 36-2020 Amendment to Philippine Civil Aviation Regulations Re: Safety Management System Requirement for International - General Aviation Operators