Table schema:
CREATE TABLE pilot_record (Aircraft_ID VARCHAR, Pilot_ID VARCHAR); CREATE TABLE pilot (Pilot_ID VARCHAR, Age INTEGER); CREATE TABLE aircraft (Fleet_Series VARCHAR, Aircraft_ID VARCHAR)

Question: Show the fleet series of the aircrafts flied by pilots younger than 34
SQL: SELECT T2.Fleet_Series FROM pilot_record AS T1 JOIN aircraft AS T2 ON T1.Aircraft_ID = T2.Aircraft_ID JOIN pilot AS T3 ON T1.Pilot_ID = T3.Pilot_ID WHERE T3.Age < 34