CREATE TABLE pilot (Pilot_ID VARCHAR2, Age NUMBER)
CREATE TABLE pilot_record (Aircraft_ID VARCHAR2, Pilot_ID VARCHAR2)
CREATE TABLE aircraft (Fleet_Series VARCHAR2, Aircraft_ID VARCHAR2)

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