What was found
DURING APPROACH RECEIVED A TRAILING EDGE FLAPS DISAGREE EICAS MESSAGE UPON CONFIGURING TO FLAPS 5. DISCONTINUED THE APPROACH AND COMPLIED WITH QRH. RETURNED TO FOR A UNEVENTFUL FLAPS 20 LANDING. ***EMERGENCY DECLARED*** WHILE CYCLING FLAPS/SLAT`S AS PER B767 M/M 27-51-00-2 AND WHILE MONITERING I/O ON F.S.E.U. AS PER F.I.M. 27-51 F.T. 809 FOUND NO FAULT`S WHEN MOVING FLAP`S FLAP LEVER DETENT AND I/O SHOWED SAME BETWEEN FLAP LEVER AND FLAP`S BUT WHILE MOVING FLAP`S SLIGHTLY OUT OF DETENT I/O SHOWED SPLIT BETWEEN FLAP`S AND FLAP LEVER AND CAUSED FAULT ON F.S.E.U. ALSO M.O.C.C. REPORTED SAME ISSUE, CYCLED FLAP`S SEVERAL TIME`S WHILE IN DETENT WITH NO ISSUE`S AND NO FAULT`S ON F.S.E.U. REINSTALLED REMOVED COVER ON SLAT P.D.U. AND INSTALLED REMOVED RIGHT WING SLAT P.D.U. PANEL AS PER B767 M/M 27-81-10-4, CONFERANCE CALL CONDUCTED WITH M.O.C.C., O.K. FOR SERVICE.