A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH THE 'A' SYS ELECTRIC HYD PUMP QUICK DISCONNECT NOT LOCKED. RETURNED DUE TO LOSS OF 'A' SYS FLUID.

Narrative

ON JAN/THU/04; I WAS CALLED OUT TO ACFT TO INSPECT A LEAK FROM THE WHEELWELL THAT THE RAMP HAD NOTICED. I FOUND THE 'A' SYS ELECTRIC PUMP TO BE LEAKING. AT THIS POINT THE ACFT WAS TAKEN OTS. MYSELF AND ANOTHER MECH CHANGED THE PUMP; AND THE 'A' SYS CASE DRAIN FILTER. I REATTACHED THE 'A' SYS QUICK DISCONNECT. I CHKED FOR LEAKS WHILE THE OTHER MECH WAS IN THE COCKPIT RUNNING THE PUMP VERIFYING PRESSURE OUTPUT. EVERYTHING CHKED OUT. AT THIS POINT WE TAXIED THE ACFT TO THE GATE FOR A FLT THAT OPS NEEDED THE ACFT FOR BY XA30. THE CREW TOOK THE ACFT SOME TIME LATER; THEY CALLED BACK SAYING THE ACFT LOST THE 'A' SYS ELECTRIC PUMP. THE ACFT RETURNED TO THE GATE; AND UPON INSPECTION I FOUND THE INDICATOR/LOCK PINS ON THE 'A' SYS QUICK DISCONNECT PINS WERE NOT PROTRUDING; WHICH WAS THE REASON FOR THE PUMP TO LOSE THE FLUID SUPPLY. IN THE HEAT OF THE MOMENT TRYING TO MAKE SURE THE ACFT WOULD MAKE THE XA30 DEP THAT IT WAS SLOTTED FOR; I DID NOT CATCH THAT THE INDICATOR/LOCK PINS WERE NOT PROTRUDING FROM THE QUICK DISCONNECT WHEN I CONNECTED IT AND HAD IN THE UP POS (FULLY CONNECTED).