As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 162 SMF-JFK, DIVERTED TO SLC. FLIGHT CREW REPORTED UNKNOWN ODOR AFT CABIN. DESCRIBED AS PROPANE OR SULFUR. DID NOT DISSIPATE CLEARED AFTER LANDING W/ PACKS OFF. ACCOMPLISHED TSM TASK 05-50-00 TO IDENTIFY OF CAUSE OF CABIN ODOR. ISOLATED CAUSE OF THE ODOR TO BE ATTRIBUTED TO BALLAST AT ROW 24 A/C RIGHT. DISCOVERED BALLAST/CEILING LIGHT ASSY TO BE INOPERATIVE. R&R BALLAST AND RELAMPED IAW 33-21-00.