As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE WORKING STGR 21R JOINT PIECE AT STGR 21R AND FS 379 FOUND TO BE CORRODED. REMOVED AND REPLACED JOINT PIECE AT STGR 21R FROM FS 379 AND FS 396 IAW CRJ900 SRM 51-42-06 AND 51-42-21 AS ON AAR WO 1007307-1000-0181 AND MESA WO 711009503.