What was found
HYD SYS 3 FAILED DURING CLIMBOUT , FAIRLY RAPID LOSS OF QTY, HISTORY HAD RT OTBD FLAP DROOP SITTING ON RAMP. RAMP MAINT CHECKED ALL NORMAL BUT HYD/RMP AUX PUMPS USED TO REMOVE FLAP DISAG. MANUALLY DROPPED LANDING GEAR IAW RED TAB PROCEDURE. AFTER BLOCK-IN OTBD FLAPS INDICATE DROOP TO SHOW 0-9. COMPLETED REPLACEMENT OF NR 3 HYD SYS HORIZONTAL STAB MOTOR IAW AMM 27-43-30-4. LEAK AND OPS CHECK OF HORIZONTAL STAB MOTORS GOOD IAW AMM 27-40-00-5. REMOVED ALL WORK MATERIALS FROM HORIZONTAL STAB AREA. RESET LANDING GEAR ALTERNATE EXTENSION HANDLES IAW AMM 32-32-00-5. OK FOR SERVICE.