What was found
ON APPROACH INTO YOW, FLAPS FAIL CAS MESSAGE FAILED AT 0 DEGREES, COMPLIED WITH QRH. LANDED AT APPROXIMATELY 40,600 LBS, CREW DID NOT CALL IN DISCREPANCY. NO HES/RTO INSPECTION REQUIRED. INTERROGATED FECU, FECU SHOWS FLAP FAIL WAS DUE TO JAM ON LEFT WING. REMOVED AND REPLACED LT BPSU, OPS CHECK GOOD. INSPECTED FLAPS, NO EVIDENCE OF TWISTING OR SKEWING IAW AWAC SUPPLEMENT 98-018A. RESET FLAP CIRCUIT BREAKERS ONCE, MESSAGE CLEARED. FLAPS OPERATE NORMALLY. PLACED ON 72 HOUR FLAP WATCH. REF 164559/4 FOR DIL FECU INTERROGATION. BRAKE AND POS SENS UNIT P/N 855D100-11, S/N 2262. (M)