As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND CRACKED DURING AIRFRAME 100/200/500 HOUR INSPECTION, BRACKET SUPPORTS, AIR INLET COOLING DUCT WHICH IS SUBJECT TO RAM AIR AND LIKELY VIBRATES CAUSING METAL OF BRACKET TO COLD WORK. THIS IS A COMMON PROBLEM WHICH OCCURS EVERY 200-300 HOURS FOR THIS COMPONENT. SUGGEST MFG IMPROVE STRENGTH AND INTEGRITY OF COMPONENT. USE SS INSTEAD OF ALUMINUM. (K)