As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1422 - LGB-PDX, "SLAT FAIL" UPON SELECTING FLAP 1 ON APPROACH. SLATS FAILED TO MOVE AND DISPLAYED AN AMBER "0" POSITION INDICATION. QRH PROCEDURE APPLIED AND FAILURE PERSISTED. REMOVED AND REPLACED LT OUTBOARD SCREW SENSOR 2 AND 3 PER 27-83-01. OPS CHECK NORMAL. NO FAULT PRESENT.