What was found
FLAPS FAIL AT 30 ON APPROACH. EMERGENCY DECLARED. PERFORMED TROUBLESHOOTING PER BOMBARDIER FIM REV.39 IAW AD 2009-06-12 PARAGRAPH(H)(6)(I), AMOC DATED MARCH 27,2009, TR#27-012 PER AMOC DATED DECEMBER 18,2009 AND PA AD 27-052G. R/R FECU AND SKEW DETECTION UNIT. REMOVED AND REPLACED FECU IAW AMM 27-51-05. OPS CHECKS GOOD.