As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: WEAR MARKS ALONG THE UPPER EXTERNAL SURFACE OF LEFT WING FIXED LEADING EDGE UPPER ACCESS PANEL JUST INBOARD OF ENGINE STRUT. REMOVED AND REPLACED NEW ASSEMBLY SKIN AT LEFT HAND WING FIXED LEADING EDGE UPPER ACCESS PANEL JUST INBOARD OF ENGINE STRUT. PER B737 NG SRM 51-40-02.-OG AND B737 NG AMM 20-50-11.910.