What was found
HYD NR 3 HIGH TEMP CAUTION MESSAGE RAN CHECK LIST WITH 3A OFF 3B ON TEMP WENT FROM 98C-96C THEN STARTED TO CLIMB- TURNED 3B OFF AND TEMP FELL STEADILY. ALSO NR 3 HYD QUANTITY WENT FROM 65 PERCENT TO 100 PERCENT WHEN THE HYD 3 PUMPS WERE TURNED OFF. TURNED ON 3B FOR LANDING AND PRESS=0. COMPLETED HYD 3 LO PRESS. RETURNED TO FIELD. LANDING UNEVENTFUL. R & R THE NR 3 HYD RESEVOIR IAW TASKS 29-12-30-000-801 AND 29-12-30-400-801. PERFORMED INSP CHECK AFTER DEPLOYMENT OF LANDING GEAR ALT EXTENSION IAW 05-51-31-210-801. PERFORMED INSPECTION AFTER HYD SYS OVERHEAT IAW 05-51-15-210-801. OPS TEST GOOD. LEAKAGE TEST GOOD.