As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN FOR #6 SLAT LIGHT ON OVERHEAD BITE SHOWS SL6 PROX. OUTBOARD. LATCHED LEG 0 AND 1. ADD FAULT: 27-81210 FULLY RETRACTED. SITTING AT THE GATE, #6 SLAT LIGHT GOES FROM ON TO OFF. SLATS PARTS UPLOAD SPLICED IN #6 SLAT SENSOR REF BSWPM 20-10-13 AND W.D. 27-21-82, NEEDS SECURED AND OP CK''D. ADD EMP:U236661 REMOVED AND REPLACED #6 SLAT OTBD POS SENSOR. OPS CHECK GOOD.