- 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 08-2020 Amendment to CAR – Aerodromes
- MC 09-2020 Deferment of Payment of Take-Off, Landing and Parking Fees of Philippine Commercial Air Carriers
- 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 18-2020 Guideline for the Resumption of Operations of Approved Training Organization under General Community Quarantine Period (GCQ)
- 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)