What was found
"ON CLIMBOUT THROUGH APPROX FL180 RECEIVED LEVEL 1 ALERT "HYD 3 ELEV OFF". HYD SYNOPTIC SHOWED APPROX 3 GALS AND DECREASING. SOON AFTER RECEIVED LEVEL 2 ALERT "HYD 3 FAIL" AND QTY DECREASED TO 0.2 GAL. RAN "HYD SYS 3 FAIL" QRH PROCEDURE WITH AND EVENTUAL ALTERNATE GEAR EXTENSION. (DKM)". RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. HORIZONTAL STAB TRIM MOTOR 1 HSG FOUND TO BE CRACKED. REPLACED NR 1 STAB TRIM MOTOR UPTO 3.B.8 OPS AND LEAK CHECKS REQUIRED, REF MM 27-43-01-2. MEM R COMPLETED REPLACEMENT OF NR 1 STAB TRIM MOTOR, LEAK AND OPS CHECK GOOD, REF MM 27-43-01-2. NR 3 HYD SYS FILTERS CHANGED ON WRI 29-10/1262.