As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER CABIN FLOOR SEAT TRACK BETWEEN FRAME 19 - 20, RBL10 IS CORRODED AT UPPER SURFACE. R & R SEAT TRACK 170-03263-001 IAW SRM 51-41-02 & EO E175-53MR-062 REV 5 WO 1939698. THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH THE ON CONDITION REPLACEMENT OF A DAMAGED OR PREVIOUSLY REPAIRED RT FLOOR TRACK PN 170-03263-001 BETWEEN FRAMES 12 & 20 WITH A NEW PN 170-03263-001 FLOOR TRACK. THE FLOOR TRACK WILL BE REPLACED USING PRODUCTION DWGS. BECAUSE THE TRACK IS A PSE, ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR.