As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEAR DAMAGE WAS ACCIDENTALLY CAUSED TO CROSS BEAMS (P/N MM670-35314-009 AND MM670-35319-001} AT THE JOINT WITH CLIP (P/N MM670-35335- 001} LOCATED AT FS1015.00 DURING MTC ACTIVITIES WHEN FLOOR BEAM WAS REMOVED. PERFORMED PERMANENT REPAIR IAW CRJ 700/900 SRM 53-61-43-001-001-A01, FIGURE 53-61-43-991-801, ITEM 29A,21B, EA 81-2021-085 .