As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCHEDULED MAINTENANCE VISIT, LEVEL 2 CORROSION WAS DISCOVERED ON THE SCALLOPS AND WELLS OF A PASSENGER CABIN SEAT TRACK LOCATED AT BS 344-360 LEFT INBOARD SIDE. REMOVED THE CORRODED SECTION OF SEAT TRACK AND REPLACED WITH A NEW SECTION MADE OUT OF BOEING EXTRUSION P/N BAC1520-792. WORK DONE IAW BOEING 737 SRM 53-10-5 FIGURE 2. (M)