As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE REMOVAL FOR PROP/ENG TBO, DISSIMILAR METAL CORROSION WAS NOTICED IN THE HUB, TN THE BOLT HOLES. THIS AC IS APPROX THREE YEARS OLD WITH 2000 HOURS. RECOMMEND: LUBE BOLT SHANKS PRIOR TO ASSEMBLY; BETTER PRIMING INSIDE THE BOLT HOLES BY MFG. (WP07200505591)(K)