Aerodrome safety and Standard department (ASSD) is one of the department under Civil Aviation Safety Regulation Directorate (CASRD) of Civil Aviation Authority of Nepal (CAAN) which is established at 14^th April 2009 to perform:

1. Certification function of the aerodromes of flight operation in accordance with national/international adopted rules and regulation by CAAN.
2. Notifications function to Aeronautical Information Services (AIS) and other Organizations about the certified status of an aerodrome.
3. Safety oversights function in aerodrome & ground area especially in the field of Civil, Electromechanical and Fire services.

The Civil, Electromechanical and Fire Inspectors perform their duties on based on Airport Certification Regulation (ACR), Annex-14 & Annex-19 to issue, renew and revocate aerodrome Certificate of International & Domestic airport as well as permission of rooftop helipad of Nepal. ASSD regularly conducts Surveillance & Audit inspection program carrying over all airport of Nepal to maintain the issued aerodrome certificate, verify and test facilities, equipment and processes of aerodrome as per their aerodrome manual. It comprises of two divisions which are aerodrome safety division and aerodrome standard division.