As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
* CORROSION DETECTED ON SERV DOOR LWR SILL (OTBD) "ANGLE" SEVERAL PLACES BETWEEN F.S. 319.70 AND 349.00 (MARKED). (C-CHECK RO 7/7/2021) REMOVED AND REPLACED NEW LOWER SILL OUTBOARD ANGLE ON SERVICE DOOR REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-31950 REV Y. COMPLY WITH TASK CARD 51-900-1002-SKY AND FORM M-337. SEE CONTINUE CARD FOR MORE DETAILS