What was found
DURING APPROACH, APU FIRE BELL SOUNDED, THE FIRE LIGHT ILLUMINATED AND APU FIRE BOTTLE DISCHARGED. AIRCRAFT LANDED IN DTW WITHOUT FURTHER INCIDENT. REPLACED APU FIRE DETECTOR AND BOTTLE. OPERATIONAL CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING APPROACH, APU FIRE BELL SOUNDED, THE FIRE LIGHT ILLUMINATED AND APU FIRE BOTTLE DISCHARGED. AIRCRAFT LANDED IN DTW WITHOUT FURTHER INCIDENT. REPLACED APU FIRE DETECTOR AND BOTTLE. OPERATIONAL CHECK GOOD.