As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS DURING A SCHEDULE INSPECTION THE APU ENGINE FIRE BOTTLE GAUGE IS UNREADABLE. MAINTENANCE REMOVED AND REPLACED THE FIRE BOTTLE IAW EMB 145 AMM 26-22-01. REPAIR WAS SATISFACTORY, AIRCRAFT WILL BE RELEASED UPON COMPLETION OF INSPECTION.