As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURN BACK DUE TO SMOKE IN CABIN DURING CLIMB BETWEEN 12000 AND 15000 FT. CREW NOTED THAT THE ODOR SEEMED TO BE COMING FROM BEHIND THE LT CIRCUIT BREAKER PANEL. AIRCRAFT LANDED WITHOUT INCIDENT AT KSFB. REPLACED THE NR 1 VHF 4000 IAW AMM 23-11-01. PERFORMED SATISFACTORY ELECTRICAL BONDING TEST IAW SPM 51-80-00. PERFORMED SATISFACTORY OPSL TEST OF THE NR 1 VHF IAW BD-100 23-11-00.