What was found
AFTER TAKEOFF, LEVEL 1 HYD PUMP 3L PUMP ALERT, WITH TEMP (T) INDICATED. 1 HR 25 MIN LATER AT CRUISE, FL330, HYD 3 QTY BEGAN DECREASING. SWITCHED TO MAN. ISOLATED HYD 3 & TURNED 3L & 3R PUMPS OFF. HYD 3, QTY CONTINUED TO DECREASE TO ZERO (0). HYD 3 FAIL ALERT APPEARED. ALT GEAR EXTENTION USED AT LANDING. R & R NR 3 ENG RT/AFT EDP AND GEARBOX SEAL REF MM 29-11-20-4 2. R&R LT FWD PUMP PER MM 29-11-20-4, RAN ENG PER JRH, PERFORMED ADJ/TEST 03 REF MM 71-02-03-5 ALL TESTS PASSED , NO LEAKS NOTED, ALL POPPETS ON NR 3 ENG AND MAIN SYS FILTERS REMAINED STOWED. NR 3 ENG COWLS CLOSED PER MM 71-10-00-2