As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPORT TASK: MAIN CABIN SEAT TRACK STA 500D-500E LBL24 HAS CORROSION. TRANSCRIBED FROM HAECO GSO NRC# 9288266 REMOVED CORROSION FROM MAIN CABIN SEAT TRACK STA 500D-500E LBL-2 HAECO GSO MECH V900579 INSP QC453 4, MAX ALLOWED IS .040, MATERIAL LOSS .080 OUT OF LIMITS IAW B73 7-900NG SRM 53-00-52. REMOVED DAMAGED SECTION OF SEAT TRACK AND INSTALLED REPAIR SECTION IAW B737-900NG SRM 53-00-52 REPAIR 4.