As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GROUND PERSONNEL REPORTED SMOKE AND FLAMES COMING FROM APU AFTER SHUTDOWN USING MASTER SWITCH. FLAMES WOULD NOT SUBSIDE - APU FIRE BUTTON WAS PUSHED - FLAMES EXTINGUISHED. MAINTENANCE REPLACED AIR/OIL SEPARATOR ADAPTER IAW AIRBUS MAINTENANCE MANUAL 49-26-54. PER TECHNICAL SERVICE INSTRUCTION (TSI), THE APU FUEL CONTROL UNIT WAS ALSO REPLACED IAW AMM 49-32-11.