Certification of Air-worthiness:In order to ensure flight safety, airworthiness of aircraft must be ensured first. An aircraft can be regarded as airworthy if it and its components conform with design standards, are of approved type and are in sound operational condition. CAAB regularly inspects the aircrafts registered in Bangladesh and issues/renews certificate of airworthiness for the worthy aircrafts, and suspends/cancels such certificate of unworthy ones. Without such certificate no aircraft should attempt to fly. In relation to such certification, CAAB also continuously monitors all maintenance activities with Bangladesh aircrafts, approves certificate for aircraft type and certificate for maintenance establishments, issues directions regarding maintenance, approves design modification, repair and replacement of any component.

Personnel Licensing: Each personnel responsible for flight operations on board – pilot, navigator, flight engineer, flight instructor, air traffic controller etc. – and aircraft maintenance engineer on ground should have appropriate license proving his ability and skill before he engages himself in respective job. CAAB tests and issues/renews licenses to the successful applicants. No member of the aircrew and no maintenance engineer should engage in flying operations and participate in maintenance works respectively without such license.

Bi-lateral Agreements: CAAB examines documents submitted by other countries in regard to bilateral Air Services Agreements, negotiations and prepares brief for the Government. Any foreign airline intending to operate scheduled flights in the country must be designated pursuant to such Government level agreements.

Air Transport Service Authorization: CAAB issues/cancels license for Bangladeshi enterprises of air transport services, and approves, revises if required, tariff including fares, rates, charges, commissions, and terms and conditions associated with their business.

CAAB provides air traffic control service to each aircraft flying in the national airspace and moving on maneuvering areas of Bangladesh aerodromes in order to prevent collisions, and to maintain expedite and orderly flow of air traffic.

CAAB establishes air routes, and flying, approaching and landing procedures for each route and aerodrome belonging to the country.

CAAB makes all necessary arrangements for search and rescue operations in case of accident or missing of any aircraft, and conducts investigations against accidents and unwanted incidents related to aircrafts.

CAAB makes provisions for facilities and services for aeronautical telecommunications and air navigation in order to ensure safety, regularity and efficiency of aircraft operation.

CAAB makes all necessary arrangements to establish and maintain all passenger services and facilities at the terminal of Bangladesh airports. Arrangements for facilities, such as flight information, public address, entertainments, comfortable room and environment for passengers and their attendants are all accomplished by CAAB.

CAAB constructs, maintains and develops airports, aerodromes whenever and wherever are required in order to expand the aviation infrastructure and air transportation network in the country.

CAAB also provides operational accommodation to other organizations and agencies like airlines, Customs, Immigration, Meteorology, Health, Police etc. at the airports.

CAAB studies, evaluates and plans for development of the aviation infrastructure within the country considering necessity and budget. It also maintains liaison with regional partners and ICAO in relation to future development programs masterminded by ICAO.

CAAB takes all necessary steps for training of its operational officers and employees both in country and abroad. It has already established the Civil Aviation Training Centre at Dhaka.