CREATE TABLE table_74032 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( millions ) " CLOB)

What was the air date of the episode that has a production code of 5aky13?
SELECT "Original air date" FROM table_74032 WHERE "Production code" = '5AKY13'
SELECT "Original air date" FROM "table_74032" WHERE "Production code" = '5AKY13'