CREATE TABLE table_204_161 (id NUMBER, "name" CLOB, "1968 cf\ designator" CLOB, "place of\ manufacture" CLOB, "primary\ role ( s ) " CLOB, "service\ period" CLOB, "#\ used" NUMBER)

which aircraft has the top number of aircraft in service ?
SELECT "name" FROM table_204_161 ORDER BY "#\nused" DESC LIMIT 1
SELECT "name" FROM "table_204_161" ORDER BY "#\nused" DESC FETCH FIRST 1 ROWS ONLY