CREATE TABLE table_204_163 (id DECIMAL, "airline" TEXT, "icao" TEXT, "iata" TEXT, "callsign" TEXT, "commenced\ operations" DECIMAL)

which airlines have not commenced operations as of 2013 ?
SELECT "airline" FROM table_204_163 WHERE "commenced\noperations" IS NULL
SELECT "airline" FROM "table_204_163" WHERE "commenced\noperations" IS NULL