As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE INSPECTION CORROSION WAS FOUND OUT OF LIMITS ON SEAT TRACK UPPER AND LOWER SIDE AT BS 380 TO BS 420, RBL 40. REMOVED CORROSION IAW B727 SRM 51-10-06. REMOVED SEAT TRACK IAW B727 SRM 51-30-02 AND 53-10-05. FABRICATED NEW SEAT TRACK FROM BAC 15207887188. TREATED AND PRIMED IAW B727 SRM 51-10-02 AND MM 51-20-02. INSTALLED IAW B727 SRM 513002 AND 531005.