CREATE TABLE table_72976 ("Aircraft" TEXT, "1990" FLOAT, "destroyed" FLOAT, "damaged" FLOAT, "to Iran" FLOAT, "survived" FLOAT)

If there were 14 in 1990 and 6 survived how many were destroyed?
SELECT "destroyed" FROM table_72976 WHERE "1990" = '14' AND "survived" = '6'
SELECT "destroyed" FROM "table_72976" WHERE "1990" = '14' AND "survived" = '6'