As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE, DISCOVERED EMERGENCY LIGHTS FLASHING WITH SWITCH IN ARM AND OFF POSITION. TROUBLESHOT SYSTEM. REMOVED AND REPLACED THE NR 1 EMERGENCY LIGHTS BATTERY IAW MM 33-52-01. OPS CHECK GOOD. P/N 6450LS-00 S/N 001788.