As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING SMELL COMING FROM THE APU FEED PANEL (F/O'S SIDE). REMOVED AND REPLACED APU FEEDER PROTECTION RELAY AND CONNECTION BARS IAW EMB120 MM 20-00-00 AND WM 20-40-00. OPS CHECK. NO MORE ODOR. P/N: 25583-448258051-22, 120-24038-501, 120-24029-001.