As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CPCP BASE CORROSION INSPECTION. WHILE ACCOMPLISHING SID 57-11-01 WING STRUCTURE INSPECTION. DURING CLEANING OF SPAR BLOCKS SEVERE EXFOLIATION CORROSION WAS FOUND ON 3 OUT OF 4 SPAR BLOCKS. CORROSION WAS LOCATED INSIDE RADIUS OF BLOCK WHERE AN BOLTS SECURE BLOCK INTO SPAR CHANNEL. CORROSION WAS SO SEVERE SPAR BLOCKS HAD TO BE REPLACED.