Question: What airline has a IATA of BX?
SQL: SELECT "AIRLINE" FROM "2-15621888-1" WHERE "IATA" = 'BX';

Question: What is the ICAO for Asiana Airlines?
SQL: SELECT "ICAO" FROM "2-15621888-1" WHERE "AIRLINE" = 'Asiana Airlines';

Question: What is the commenced operation where the ICAO is KAL?
SQL: SELECT "COMMENCED OPERATIONS" FROM "2-15621888-1" WHERE "ICAO" = 'KAL';

Question: What is the ICAO for AIR BUSAN?
SQL: SELECT "ICAO" FROM "2-15621888-1" WHERE "CALLSIGN" = 'AIR BUSAN';

Question: What is the callsign where the ICAO is AAR?
SQL: SELECT "CALLSIGN" FROM "2-15621888-1" WHERE "ICAO" = 'AAR';