As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVAL OF THE TCAS OMNIDIRECTIONAL ANTENNA: CORROSIÓN WAS FOUND ON FUSELAGE SKIN(SETTLEMENT AREA) OF ANTENNA BTW FS 295.00 AND FS 310.00 AND STGR 26LH TO STRG 26RH. CORROSIÓN ON SETTLEMENT AREA OF ANTENNA BTW FS 295.00 AND FS 310.00 AND STGR 26LH TO STRG 26RH WAS REMOVED PER CRJ900 SRM 51-21-06-001-001-A01 AND WAS EVALUATED WITHIN LIMITS PER CRJ900 SRM 53-00-01-201-017-A01