As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SKIN AT THE COOLING DUCT CUTOUT BS 379 BL 2 WAS FOUND CRACKED AT THE AFT EDGE OF THE CUTOUT INTO A FASTENER HOLE. THE CRACK IS APPROXIMATELY .6 IN LENGTH AND IS TYPICAL OF CRACKS DESCRIBED IN BACO S/B 737-53-1117 R1 IN ACCORDANCE WITH THE ABOVE S/B, THE SKIN WAS REPAIRED.