As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 4C INSPECTION, FOUND EXCESSIVE CORROSION ON SKIN DIRECTLY UNDER PILOTS YOKE AND STRINGER UNDER COCKPIT FLOOR BELOW PILOTS SEAT. REMOVED SKIN, TRIMMED AND FIT NEW SKIN AND INSTALLED. REMOVED AND REPLACED STRINGER ASSEMBLY UNDER COCKPIT ON LEFT SIDE ABOVE TIE STRAP FOR SKIN. REPLACED FITTING FORWARD OF SUBPANEL. ALL WORK PERFORMED IAW SRM 51-00-11. (M)