As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SETTLEMENT AREA OF AFT MAST DRAIN, BTW 27 TO 26RH AND FS:1031 TO FS:1047. SETTLEMENT AREA OF AFT MAST DRAIN, BTW 27 TO 26RH AND FS:1031 TO FS:1047 WAS REPAIRED PER EA 10-2021-036 REV A. AND DRAIN MAST SUPPORT CHANEL WAS REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01.