What was found
DURING CR FLT, LT WING SPOILER NR 4 DEPLOYED IN FLT. A/C ROLLED HARD TO LT. DISCONNECTED A/P AND COUNTERED RT SPLRS ON BOTH WINGS DEPLOYED FOR REMAINDER OF FLT. SPLR NR 4 DEFERRED. ON DEBRIEFING CREW, RT WING SPOILERS DEPLOYED FOR CONTROL CORRECTION ONLY. FOUND FAULT CODES EFCU POSITION 1 M-2 3 AND 6. SWAPPED EFCU'S FAULT CODED EFCU POSITION 1 M-2 4 AND 7. EFCU'S RETURNED TO ORIGINAL POSITIONS. ORDERED 1 CPN 2711299 SERVO VALVE PER TSM 27-61-06 AND 2 EFCU'S CPN 2711099 AS PRECAUTION. INSP 4L SPOILER SURFACE AND HINGES FOR ANY DAMAGE. CHECK WIRING FROM THE EFCU' TO THE 4L ACT AND VALVE GROUP. REPLACED THE 4L SPOILER VALVE GROUP. REMOVED AND REPLACED 4L SPOILER GROUP VLV PER MM 27-64-12-4. OPS