As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH INTO MSN UPON SLAT EXTENSION, THE AIRCRAFT ROLLED TO THE RIGHT. SLAT DISAGREEMENT LIGHT ILLUMINATED AND NO SLAT EXTEND INDICATION. PLACED FLAP SELECTOR TO 15 DEGREES AND SLATS EXTENDED NORMALLY. MAINTENANCE FOUND NO OBVIOUS PROBLEM BUT LUBED THE ''T'' DUCT AND DEFERRED. AIRCRAFT RETURNED TO SERVICE.