What was found
(CAN) INBOUND FLIGHT EXPERIENCED A FLAP FAIL EICAS. QRH WAS FOLLOWED AND A PAN WAS DECLARED AS A PRECAUTION. THE FLIGHT LANDED WITHOUT FURTHER EVENT. SFACE 1 & 2 PUT TO THIER ORIGINAL POSITION. SFACE 2 REPLACED AND CHECKED SERV IAW AMM 27-53-02. FLAP SKEW SENSOR 3 AND FLAP SKEW SENSOR 4. REPLACED AND CHECKED SERV IAW AMM 27-53-06. SENSOR 3 ON MPN 5912843-7, SN B0554. SENSOR 4 ON MPN 5912843-7, SN 5406, SN OFF, SAME PN OFF. PN 1700064F, SN 0618 LT POSITION WAS REMOVED. SLAT/FLAP ACE CONTROL.