What was found
WHEN FLAPS/SLATS EXTENDED TO FLAP 15, RECEIVED A SLAT DISAGREE ALERT. RAN QRH AND LANDED. CHECKED SYS IAW AMM 27-84-00-5 AND ALL TESTS OK, CFDS SHOWS NO PSEU SENSOR RIGGING FAULTS FOR THE LAST 10 LEGS, BUT DID INDICATE NUMEROUS LANDING GEAR FAULTS, BUT NO FLAP/SLAT FAULTS. PSEU FAULTS DURING RTS AFTER FLAPS/SLATS WERE CYCLED, R & R PSEU AND SYS OPS AND RST OK IAW AMM 31-71-01-2.