As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL ODOR, FLIGHT DIVERTED. ACCOMPLISHED VISUAL INSPECTION OF AREA INCLUDING HARNESS AND CONNECTORS PHC NR 2 THAT WAS FOUND TO BE OVERHEATED. STRONG ACRID ODOR COMING FROM PHC NR 2. NO OTHER DEFECTS NOTED. SEE SEQ 0662001 FOR REPLACEMENT OF PHC NR 2. CB Y12 POPPED IN FLIGHT. FOUND PHC NR 2 OVERHEATED, REPLACED PHC NR 2 PER MM. ACCOMPLISHED PHC NR 2 BITE. TEST OK.