As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - CREW REPORTED BURNING SMELL IN CABIN FROM RIGHT RECIRCULATION FAN. SMELL DISAPPEARED WITH FAN OFF. MAINTENANCE DEFERRED RT RECIRCULATION FAN PER M.E.L. 21-25-1. AIRCRAFT RETURNED TO SERVICE. MAINTENANCE SUBSEQUENTLY REPLACED RIGHT RECIRCULATION FAN. SYSTEM OPERATIONAL CHECK NORMAL. CLEARED D.M.I. AIRCRAFT, RETURNED TO SERVICE. (X)