As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU INLET DUCT ASSY HAS SEVERAL CRACKS IN UPPER AND LOWER DUCT. (C-CHECK) RO:1/17/2020WELDED CRACKED APU UPPER INLET DUCT USING TITANIUM WELDING ROD PO# T-46030/1 PER MEGGITT CMM. ORDERED AND RECEIVED APU LOWER INLET DUCT P/N 15A103-103. INSTALLATION DOCUMENTED.