As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 300HR AF INSPECTION, DISCOVERED A CRACK RUNNING FORE AND AFT ALMOST CENTERLINE BETWEEN THE HYD FILTER BRACKETS. AFTER A THOROUGH CLEANING, ADDITIONALLY FOUND THE CRACK EXTENDING TO STA 233 TO THE DRIP PAN AND ALSO INTERNAL BEHIND THE RADIO RACK.