As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING WALK AROUND, DISCOVERED APU FUEL SUPPLY SHROUD DRAIN ERRODED SEVERLY ON LEADING EDGE. ORDERED PARTS, DRAIN MAST IN ZONE 2 LEAD OFFICE. WAITING FOR STORES TO DELIVER SEALANT AND INSTALL PARTS,BONDING STRAPS TO ZONE 2. REMOVED PANEL 194DL AND STOWED IN AFT CARGO BAY. R+R APU FUEL FEED LINE SHROUD DRAIN MAST REF AMM 28-25-07.