What is the ICAO for Air Busan?
CREATE TABLE table_name_63 (icao VARCHAR, callsign VARCHAR)
SELECT icao FROM table_name_63 WHERE callsign = "air busan"
### Context: CREATE TABLE table_name_63 (icao VARCHAR, callsign VARCHAR) ### Question: What is the ICAO for Air Busan? ### Answer: SELECT icao FROM table_name_63 WHERE callsign = "air busan"