As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RACK 300 - APU INLET SILENCER VANE DISBONDED AS MARKED (C-CHECK 8/24/2020) UPON FURTHER EVALUATION FOUND APU INLET SILENCER TO BE OUT OF LIMITS DUE TO LOOSE SPLITTER AND FAILURE OF FEELER GUAGE CHECK. REPLACE SILENCER IAW AMM. REPLACED AND INSTALLED APU INLET SILENCER REF E175 AMM.