WHEN A MECH FAILED TO COMPLETE AN A320 #4 SPD BRAKE MEL PROC; THE ACFT LANDED WITH THE SPD BRAKES EXTENDED AFTER USING THEM INFLT.

Narrative

DISPATCHED WITH THE #4 SPOILER ON BOTH SIDES DEFERRED IN THE STOWED POS. FLT WAS NORMAL WITH NORMAL FUEL BURN. IT WAS NOTICED ON THE ILS APCH; THAT CONSIDERABLY MORE PWR WAS REQUIRED THAN NORMAL TO MAINTAIN A 3 DEG GS. ON WALKAROUND FOR THE NEXT LEG; THE CAPT NOTICED THAT THE #4 SPOILER WAS EXTENDED ON BOTH WINGS. THE CONTRACT MECH TOLD US THAT THE MEL CARD HAD NOT BEEN COMPLIED WITH IN THAT THE SELECTOR HAD NOT BEEN SELECTED TO THE '0' POS TO LOCK DOWN THE DEFERRED SPOILER. QUALITY CTL DID NOT WORK IN THIS INSTANCE. THE RESULTS COULD HAVE BEEN QUITE DIFFERENT WITH A HEAVIER ACFT OR BAD WX. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE PART OF THE MEL PROC PORTING HYD PRESSURE TO THE SPOILER ACTUATOR DOWN SIDE WAS NOT COMPLETED BY THE MECH. THE SPD BRAKES WERE DOWN FROM THE BEGINNING OF THE PREVIOUS FLT UP TO THE POINT IN DSCNT OR APCH WHEN THE CREW ACTIVATED THEM; THEN THEY REMAINED UP. WHEN THE SPD BRAKES WERE USED INFLT; THEY WERE ALLOWED TO BLOW UP; BUT THERE WAS NOT PRESSURE TO LOWER THEM AGAIN.