As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO PLATFORM DUE TO SMOKE IN THE CABIN. MAINTENANCE DETECTED A SHORT CIRCUIT IN THE LT ENGINE SYS (A) IGNITION SWITCH, SO BREAKERS K-26 AND L26 WERE PULLED OUT AND AC WAS SENT TO THE HANGAR. AT HANGAR, SWITCH S1-35 WAS DETECTED BURNED SO IT WAS REPLACED IAW MM 74-30-02, TESTED CORRECT.