What was found
"FLAPS FAIL" CAS MESSAGE DISPLAYED IN CRUISE AND RESET PER CHECKLIST WHEN FLAPS WERE DEPLOYED FROM 5-15 DEGREES, A MOMENTARY ROLL OCCURRED. FLAPS EXTENDED NORMALLY BEYOND 15 DEGREES. OPS CHECKED FLAPS WITH FLAP BREAKOUT BOX. TESTED AT DIFFERENT FLAP ANGLES WITH AND WITHOUT RESOLVERS COLD SOAKED. CLEANED FLAP HANDLE ASSEMBLY. TESTED WITH AND WITHOUT BOTH CONVERTERS COLD SOAKED. REMOVED FLAP BREAKOUT BOX. FLAP OPERATIONAL CHECKS WERE GOOD. NO DEFECTS WERE NOTED. REF: 750 M/M 27-50-00.