As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE WEB OF THE STR 18A SHEAR BEAM AT FS 727, RT WAS FOUND WITH A CRACK AT AN ATTACH FASTENER ON THE AFT END. THE CRACK IS TYPICAL OF CRACKS NOTED IN S/B 737-53-1066, THOUGH THE S/B IS NOT EFFECTIVE FOR THIS AIRCRAFT. THE CRACK TERMINATED IN AN ADJACENT FASTENER HOLE AND WAS REPAIRED WITH A STEEL ANGLE PER ER/A 369718-14, REV A.