What was found
BETWEEN FLAPS 25 AND THIRTY WITH GEAR DOWN GOT LOW AIRSPEED EICAS AND L/E SLAT ASYM EICAS. RAN QRH PROCEDURE LANDED WITH FLAPS 25. PRONOUNCED PORPOISING IN THE FLARE DURING MANUAL LANDING. BIT PSEU. FAULTED 303 SENSOR I/B NR 9 L/E SLAT. REMOVED PANEL 62 TO ACCESS S303. FOUND BOLT AT 303 SENSOR TARGET BROKEN. REPLACED BOLT AND INSTALLED TARGET PER MM. CYCLED SLATS SEVERAL TIMES CKS NORMAL. NO MSGS ON PSEU. REINSTALLED PANEL 621JB. CHECKED OPERATION OF FLIGHT CONTROLS. FOUND ALL TO OPERATE NORMAL.