As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE TWO SPOTS OF CORROSION WERE VISUALLY IDENTIFIED ON THE AFT LEFT HAND VERTICAL SPAR CAP (P/N: 5131007-5) OF THE VERTICAL STABILIZER. THESE SPOTS EXIST AT APPROXIMATE W.L 156.52 AND W.L. 167.52, AND HAVE A MAXIMUM DEPTH OF .033 INCHES. THIS DEPTH IS IN EXCESS OF BLENDING LIMITS OUTLINED IN CESSNA AIRCRAFT COMPANY'S SUPPLEMENTAL INSPECTION NUMBER 55-30-01. THIS CAP WILL BE REMOVED AND REPLACED USING NEW PARTS.