What was found
ON FINAL APP. WITH FLAPS 22*, EXTENDED GEAR AND GOT SLAT DISAG ALERT. PREFORMED GO-AROUND AND RETRACTED GEAR & FLAPS ONLY TO 15*. WENT TO QRH FOR SLAT DISAG. DID FLAP 22* LANDING AND LEFT FLAPS & SLATS IN 22* POSITION ALL THE WAY TO SHUTDOWN. ALERT DID GO AWAY DURING GO AROUND WHEN FLAPS WENT TO 15%. FOUND L4A SENSOR IN PSEU READOUT IN NEED OF ADJUSTMENT, FOUND SLAT TRACK 10 FWD 4 SUPPORT BLOCKS WORN, R & R BLOCKS REF AMM 27-80-04-2, ADJUSTED L4A SENSOR REF 27-84-02-5, OPS CHECKS NORMAL