What was found
FLAPS FAIL CAUTION CAME ON DURING CRUISE, 20 MIN INTO FLIGHT, -40C, 0 FLAP INDICATION, 295 KTS, FLAPS STOPPED, CLEAR SKY. FROM MM02 MEL CONTROL 001050 FLAP FAIL CAUTION. RESET FLAP SYS UNDER MOC DIRECTION IAW FIM, RESET PROCEDURES, MSG NO LONGER REMAINS, CYCLED FLAPS 5 TIMES & PROBLEM DID NOT REOCCUR. DEFERRED FLAP SYS IAW MEL 27-50-00 CAT A UNDER DIRECTION OF MOC TC 4488. ENTERED ITEM IN MM02 PLACARD INSTALLED. PERFORMED TROUBLESHOOTING IAW FIM REV 48 IAW AD 2009-06-12 PARAGRAPH H 6 I, AMOC LOG 14-105 DATED 12 30 2014. INTERROGATED FECU FOR FAULT HISTORY, WHICH FLAGGED THE RT BPSU. PERFORMED CHECK OF WIRING HARNESS TO RT BPSU, NO DEFECTS NOTED IAW FIM 27-50-00. REPLACED RT BPSU IAW AMM 27-51-10. PN OFF 855D100-11, PN ON 855D100-15, SN OFF 2291 & SN ON1965. OPERATIONS CHECKED GOOD AT THIS TIME.