As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE WORKED DMI 337987/02 NUMBER ONE ENGINE INBOARD AFT EXHAUST PANEL GRILL IS CRACKED. MAINTENACE REPLACED GRILL HEAT SHIELD NUMBER ONE ENGINE AFT PYLON FAIRING INBOARD POSITION IAW EMB ETD 2012-190-011599-B REV B. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.