What was found
CAPTAIN REPORTED THAT DURING APPROACH THE LT FLAP/SLAT SYSTEM DID NOT OPERATE HYDRAULICALLY IN NORMAL MODE PROCEEDING TO THE ALTERNATE MODE AND FLAPS DISAGREE MESSAGE APPEARED IN EICAS. FIM 27-51-00 PROCEDURE AND BITE 27-7 WERE PERFORMED TO FSEU SHOWING PDU/TXR NR 3 WORKING INTERMITTENTLY. TESTS WERE PERFORMED IN GROUND IAW MM 27-51-00, WORKING CORRECTLY. DURING OVERNIGHT CHECK SYSTEM WAS TESTED IAW MM 27-51-00 AND 27-81-00, ALL CORRECT.