As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRANSPONDER CIRCUIT BREAKER POPPED AND PILOTS NOTED SMOKE IN CABIN. FLIGHT WAS DISCONTINUED AND DISCREPENCY WAS NOTED. AFTER INSPECTION, CHAFFED WIRE WAS FOUND NEAR THE AVIONICS RACK THAT HAD SHORTED ON THE AIRFRAME. THE WIRES WERE REPAIRED IAW MFG RECOMMENDATION. MFG ALSO RECOMMENDED ANTI-CHAFE BE INSTALLED ON AIRFRAME AT THE LOCATION OF CHAFFING. (WP13200510948) (K)