What was found
EMERGENCY LIGHTS ON ACFT LT AT ROW 1 THROUGH 4 GOING ON AND OFF AT RANDOM. LATER DURING FLIGHT THE EMERGENCY LIGHTING STRIPS ON THE LT SIDE OF BOTH FWD RAFT COMPARTMENT DOORS COME ON AND WOULD FLICKER IN TURBULENCE. ACFT GROUNDED. PERFORMED SYS TEST AT ACP INDICATED LRU 2-27 WAS CAUSING MULTIPLE PROBLEMS. R & R LRU 2-27, WHICH IS CROSS BIN AND WASH LIGHT AT ROWS 9 AND 10 ABC, REF AMM 33-22-00-960-802. OPS CHECKS OK.