AB Airlines was originally marketed as Air Belfast where aircraft and crew were based at this airport in Northern Ireland formerly known as what?
Belfast International Airport: Belfast International Airport (IATA: BFS, ICAO: EGAA) is an airport 11.5 NM northwest of Belfast in Northern Ireland. Belfast International Airport:  Formerly known as Aldergrove Airport, after the nearby village of Aldergrove, Belfast International is Northern Ireland's busiest airport and the second busiest airport on the island of Ireland, second only to Dublin Airport.
i don't know