As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT INBOARD AFT END OF SEAT TRACK (UNDER AFT RIGHT LAV) HAS SURFACE GALVANIC CORROSION (M) SSI: 53-61-43-01. GALVANIC CORROSION ON TOP SURFACE OF SEAT TRACK FRAME 74. NO PRESENCE OF BLUE PAINT/INK. SUMMARY SEE NR FOR ADDITIONAL INFORMATION 001-0572:5300-2015/002 00405 REMOVED AND REPLACED SEAT TRACK PER A220 ASRP 51-77-00-00 -028. (LP# 0650530)