As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS APU AGENT DISCH LIGHT ILLUMINATED DURING CRUISE. MAINTENANCE REPORTS INDICATION PROBLEM. BOTTLE PRESSURE CHECKS C/W IAW 26-22-00-710-003 AND -040-004. NO BOTTLE DISCHARGE. BOTTLE TO FIRE PNL WIRING CHECKS GOOD. REPLACED TEST RELAY 46LP IAW ESPM 20-46-50. OP'S TEST GOOD.