As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU BLEED AIR SHUTOFF VALVE HAS SURFACE CORROSION VIEWED THRU ACCESS DOOR 313AL RLO14. R & R APU BLEED SHUTOFF VALVE IAW AMM 36-11 -10-401. LEAK AND OPS CHECK DUE. PERFORMED OPS AND LEAK CHECK OF APU BLEED SHUT OFF VALVE, OPS AND LEAK CHECK GOOD IN REF TO AMM 63-11-10-404-013.