As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND ON AFT STRAP OF APU INLET DUCT OPENING AT BS 1825. REMOVED CORROSION ON AFT STRAP OF APU INLET AT STA 1825 I.A.W. B757-200 SRM 51-10-02. MEASURED & VERIFIED LIMITS. BOTH INNER AND MIDDLE STRAP FOUND TO BE OUT OF ALLOWABLE LIMITS I.A.W. B757-200 SRM 53-80-15. REPAIRED APU INLET DUCT AFT STRAP IAW SRM 53-80-15 REPAIR 1.