As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE SCREEN THAT KEEPS FOREIGN MATERIAL FROM ENTERING CARBURETOR WHEN CARB HEAT IS ON. SPOT WELDS THAT HOLD SCREEN IN PLACE ARE COMING LOOSE AND LETTING SCREEN VIBRATE AND COME APART. THIS WOULD LET PIECES OF THE SCREEN GO INTO ENGINE WHEN CARB HEAT IS ON.