What was found
(CAN) ON APPROACH TO MKE THE FLAPS FAILED AT ZERO DEGREES WHEN SELECTED TO 8 DEGREES. FLAP FAIL CAUTION MESSAGE DISPLAYED. AN UNEVENTFUL FLAP ZERO LANDING WAS CARRIED OUT. THE FLAPS WERE MANUALLY CONFIGURED TO 8 DEGREES BY MTC AND THE A/C FERRIED TO A MTC BASE. FECU CODES RETRIEVED INDICATED THE SKEW DETECTION UNIT. THE SKEW DETECTION UNIT ALSO HAD FAULT LIGHTS ILLUMINATED. THE SKEW DETECTION UNIT WAS REPLACED AND THE SYSTEM TESTED SERVICEABLE. SKEW DETECTION UNIT P/N 80-043-01, S/N A994 WAS REPLACED (TC NR 20091202004)