As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN AIRCRAFT PHASE 3 INSPECTION, THE NUMBER ONE ENGINE TRUSS WAS FOUND TO BE CRACKED AT THE UPPER FORWARD FIREWALL ATTACH POINT. REPLACED TRUSS WITH NEW TRUSS IN ACCORDANCE WITH THE FAIRCHILD AIRCRAFT INCORPORATED MAINTENANCE MANUAL 71-20-20. AIRCRAFT RETURNED TO SERVICE.