As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE TWO 707 MLG INNER CYLINDERS WERE RECEIVED FOR EVALUATION IN SERVICEABLE CONDITION. DURING MAGNETIC PARTICLE INSPECTION, NUMEROUS REGIONS OF UNTEMPERED AND OVERTEMPERED MARTENSITE WITH LADDER CRACKS WERE FOUND UNDER THE CHROME PLATING. PN 65-22112-1, SN 1871. PN 65-22112-5, SN 2624. NORTHROP RUMM AN W/O: 314848 AND W/O 314847.