As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A HEAVY LINE MAINTENANCE CHECK, THE RIGHT HAND OUTBOARD SEAT TRACK AT STA 400 RBL 44 WAS CORRODED OUT OF LIMITS. REMOVED CORROSION FROM SEAT TRACK IAW B727 SRM 531001. FABRICATED NEW SEAT TRACK FROM BAC1520792. TREATED AND PRIMED IAW B727 SRM 511002 AND MM 512002. INSTALLED PER SRM 531005.