What was found
SPEEDBRAKE DID NOT EXTEND. DEPLOYED MANUALLY. DEF PER MEL. -INF- :BOEING AHM DOWNLINKING MMSGS 32-11910, 12760, 12010, 12860 REF MT 27-029R2 & 27-UA08. THE MT'S REFERENCED MMSG'S NOT DISPLAYED BUT APPEARS BOTH MLG TILT ACTUATORS EXPERIENCING LOW PRESSURE DUE TO BYPASSING HYDRAULIC COMPONENTS WHICH IS KNOWN ISSUE FOR THIS FDE. OK - :MESSAGES CORRELATED TO AUTO SPEEDBRAKE WERE 34-25603 AND 34-25800 WHICH FAULTED 6 LEGS AGO. ACCOMPLISHED TAT TEST PER MM AND AOA TEST PER MM34-21-04. NO FAULTS. ACCMP'D AUTO SPEEDBRAKE 26592 TEST PER MM. TEST PASSED. SYSTEM CK'S NORMAL.