As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLAT DISAGREEMENT ANNUNCIATOR ILLUMINATED ON APPROACH TO MEM. THE AIRCRAFT ROLLED TO THE LEFT WHEN RIGHT SLAT EXTENDED BEFORE THE LEFT, THEN ROLLED TO THE RIGHT WHEN THE LEFT SLAT CAUGHT UP RESULTING IN A SAFE LANDING. MAINTENANCE DETERMINED THAT A LEFT ''T'' DUCT WAS STICKING. REPLACED THE LEFT ''T'' DUCT. AIRCRAFT RETURNED TO SERVICE.