As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE SKIN AT THE COOLING DUCT CUTOUT, BS 379 BL 0 WAS FOUND CRACKED AT THE AFT EDGE OF THE CUTOUT. THE CRACK IS APPROX 1.5 INCH IN LENGTH AND IS TYPICAL OF CRACKS DESCRIBED IN BACO SB 737-53-1117 R1. CRACK FOUND AT MID VISIT IN ATL. THE CRACK WILL BE STOP DRILLED AND A PERMANENT REPAIR WILL BE INSTALLED PER THE BACO SERVICE BULLETIN REF DL ERA 303327-14.