What was found
SHIP 8120 - DIV - TO PHL DUE TO INTERMITTENT "27 FLT CTRL FAULT PRIM REU INOP" MESSAGE FOLLOWED BY "RUDDER FAIL" MESSAGE. CORRECTIVE ACTION: CLEARED THE LATCHED FAULT FROM PRIMARY FLIGHT CONTROL COMPUTER (PFCC), REPLACED AFT REMOTE ELECTRONICS UNIT (REU) 1, PERFORMED REU OPERATIONAL TEST, FLIGHT CONTROL RIGGING AND SYSTEM TESTS. (LP# 6385251, 6385248)