What was found
ON APPROACH AT 200 KNOTS HAD A FLAPS FAIL AT 0 DEGREES. AC LANDED SAFELY AND DID NOT DECLARE AN EMERGENCY. DEFERRED FLAP SYSTEM PER MEL 27-50-00 AND DOWNGRADED CAT II PER 34-00-10. RECORD FLAP CODES PER PA AD027-52G. FOUND FLAP CODES TO BE: RIGHT BPSU, FECU, WIRING R BPSU, 151A, 152A,121B,122B. PERFORMED TROUBLESHOOTING PER BOMBARDIER FIM REV 39 IAW AD2009-06-12 PARAGRAPH (H) (6) (I), AMOC DATED MARCH 27, 2009, TR # 27-012 ER AMOC DATED DECEMBER 18,2009 AND PA AD 27-052G. REMOVED AND REPLACED RIGHT BPSU IAW AMM 27-51-10. SEE AML 880218 FOR OP CHECK.