As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 2220564) DURING INSPECTION FOUND CORROSION ON LH WING FUEL ACCESS CUTOUTS 531AB,531BB,532AB AND 532BB. CORROSION ON LH WING FUEL ACCESS CUTOUTS (531AB,531BB,532AB AND 532BB). WAS REMOVED PER B737-900ER SRM 57-20-01-2R PROCEDURE 1 REPAIR 1.