As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK EXFOLIATION CORROSION WAS FOUND ON NO. 5 SPOILER PANEL ALONG LEADING EDGE OF LOWER SEAL BETWEEN WBL 71.24 AND WBL 191 R/H. MAINTENANCE REMOVED AND REPLACED NO. 5 SPOILER PANEL IAW AMM 27-62-12, FIG. 401, PG. 1-5.