As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A NUMBER 2 INS FAILED ON THE WAY TO DFW, RED FLAG APPEARED BUT NO FAULT CODE. IN ATTITUDE REF MODE SMELLED SMOKE TURNED INS OFF AND PULLED CIRCUIT BREAKER. REMOVED AND REPLACED INU BATTERY AND BLOWER VANE SWITCH REF L/P 722257 ITEM 1 AND 722 256 ITEM 3, INS OPS CKS GOOD IAW MM 34-44-00.