What was found
FLAPS FAIL CAUTION MESSAGE RECEIVED AT CRUISE ALTITUDE OF 30,000 FEET. THE EVENT OCCURRED WITH THE FLAPS FULLY RETRACTED AT 0* INFLIGHT WITH AN EICAS POSITION OF 0*. AIRSPEED AT THE TIME OF FAILURE WAS 290 KTS AT APPROX 1 HOUR INTO THE FLIGHT. PERFORMED TROUBLESHOOTING IAW FIM CHAPTER 27-50-00 REV 48 IAW AD 2009-06-72 PARAGRAPH H 6 I, AMOC LOG 14-105 DATED 12 30 2014 & TS 001100R1 FIM TECHNICAL SUPPLEMENT. FECU FAILED FUNCTIONAL CHECK IAW AMM 27-51-05. R & R FECU IAW AMM 27-51-05. OPERATIONS CHECKED GOOD.