As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C-CHECK, THE LEFT ENGINE HAD SURFACE CORROSION AT THE 12 O'CLOCK POSITION. MX REMOVED THE SURFACE CORROSION ON REAR FLANGE IAW SRM 51-10-03. RESTORED SURFACE PROTECTION REF CPM 51-21-04. ALLOWABLE DAMAGE IAW EC 7230-01075. ALL WORK ACCOMPLISHED AND WILL BE RELEASED AT THE END OF THE CHECK.