As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT WING, UPPER OUTBOARD TRAILING EDGE FIXED PANEL WITH CRACK ON THE INBOARD WALL. CRACK LENGTH: 8 IN APPROX.(REF AAR NR 1000063266) ESFR GENERATED. ESFR #2598 SUBMITTED AND UPLOADED TO AAR NR 1000063266. REMOVED AND REPLACED RIB ON LH WING O/B FIXED T/E BTW WBL 413 TO 419 IAW B737-900ER SRM 51-40-02-0G-0 AND DWG 115A8100 REV. H.