As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION LEFT WING UPPER FORWARD SPAR CAP ASSEMBLY. EXTENT OF CORROSION WAS PAST ALLOWABLE REPAIR LIMITS SET FORTH BY CESSNA A/C CO. THE SPAR IS BEING CORRODED BY EXHAUST EMISSIONS PENETRATING INTO THAT AREA. PERIODIC CLEANING OF THIS AREA AND CORROSION TREATMENT IS RECOMMENDED. THE SPAR CAP WAS REPLACED WITH A NEW UNIT FROM CESSNA.