As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CENTER WIN BOX FWD UPPER SKIN STA 546 LBL 40.87 HORIZONTAL STIFFNER CRACKED. MKD 126-022. (REF AAR NR 99878128) REMOVED AND REPLACAED CENTER WING BOX FWD UPPER SKIN STA 546 LBL 40.87 STIFFNER IAW B737-700 ECRA 5714-01116 & RES 2015752-5F. PERFORMED HFEC ON EXISTING HOLES REF NDTM PT6 51-00-00 PROC 16 NO CRACKS. FILLET-SEAL AND CAP SEAL WILL BE ACCOMPLISHED ON N/R 99878455.