What was found
SUSPECTED CRACK ON STR.3L LINTEL AT FS 280.00. (C-CHECK) RO 2/1/2021 REPAIRED STR.3L LINTEL AT FS 280.00. REF CRJ-900-SRM 53-21-23-201-001-A01. CRJ-900-SRM 51-42-21-001-001-A01 AND SB670BA-53-040 REV C DATED 09/20/2012. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SERVICE BULLETIN 670BA-53-040 REV C DATED 09/20/2012. FUSELAGE -CENTER FUSELAGE , PRIMARY STRUCTURE FS280.00 TO FS295.00- INSPECTION AND REINFORCEMENT OF LINTEL STRINGER 3 OF THE MAIN PASSENGER DOOR , PART A AND B INCORPORATED