As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING TOUCHDOWN, THE APU FIRE HANDLE RED LIGHT CAME ON AND AN INTERMITTENT FIRE BELL SOUNDED FOR SEVERAL SECONDS. START SEQUENCE HAD NOT BEEN INITIATED AND APU HAD BEEN SHUT DOWN FOR APPROXIMATELY 1 HOUR. AFTER SEVERAL SECONDS THE INDICATIONS DISAPPEARED. FIRE HANDLE WAS PULLED. REMOVED AND REPLACED APU FIRE TEST CONTROL MODULE IAW BMM. OPS TESTED NORMAL. (M)