The main functions of the SAB are set out in the MB Decision 20-2015 and in its Rules of Procedure. The composition of the SAB plenary is defined in the MB Decision 1-2016, whereas those of its Communities (COMMs) are set-out in Annex I to the Rules of Procedure. The following COMMs have been established:
- Aerodromes Community (ADR.COMM)
- Air Traffic Management and Air Navigation Services Community (ATM/ANS.COMM)
- Commercial Aviation Community (CA.COMM)
- Drones and UAM Community (D.COMM)
- General Aviation Community (GA.COMM)
- Rotorcraft Community (R.COMM)