As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRANSFERRED FROM LOG PAGE 0671970 - AFT FLIGHT ATTENDANT REPORTS KNOCKING SOUND COMING FROM REAR CABIN OF PLANE (A THUMP THUMP SOUND) / FOUND BROKEN FLOOR STRAP P/N 147A5410-3 AT BS 867 - 947 LBL 24. R&R STRAP PER SRM 51-40-02 & 51-10-02. SEE ATTACHEDK SAM 326 FOR OPEN/CLOSE FOR ACCESS.