As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLOCK 5 ( 4, NR 0411129) REMOVED. CHECKED INSIDE OF FRONT AND REAR SPARS. SLIGHT CORROSION FOUND. CLEANED AND PAINTED WITH ZINC CHROMATE. MOST BOLTS FROZEN INTO BLOCKS. BOLTS HAD TO BE POUNDED OR DRILLED OUT. RECOMMEND THAT BLOCKS BE REMOVED IF WINGS ARE TAKEN OFF FOR ANY REASON TO CHECK INSIDE OF SPARS.