CREATE TABLE table_name_9 (to_iran INTEGER, damaged VARCHAR(255), survived VARCHAR(255), aircraft VARCHAR(255))
What's the to Iran with fewer than 9 survivors, more than 3 damaged, and an ussr an-26 aircraft?
    
SQL: SELECT AVG(to_iran) FROM table_name_9 WHERE survived < 9 AND aircraft = "ussr an-26" AND damaged > 3