As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED FOR HEAVY MAINTENANCE. NR 1 PYLON INBOUND SKIN HAS A CHAFE MARK AT THE UPPER CONTACT POINT WITH THE WING LEADING EDGE. REMOVED AND REPLACED THE NR 1 PYLON INBOUND SKIN IAW DRAWING 313T200 AND SRM 51-40-02, PARAGRAPH 7.