As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION IN FWD WET AREA LT TRACK FLOOR BEAM IN 3 LOCATIONS FROM FR16 TO FR20 AS MARKED. REMOVED AND INSTALLED NEW LT I/B SEAT TRACK FROM FRAMES 12-20 REF SRM 51--40-08 APPLIED TOPCOAT AND C.I.C TO L/H I/B SEAT TRACK FROM FRAMES 12-20 REF: SRM 51-23-06 SEE W/O H6589 SN 231 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.