As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTING: WITH AIRCRAFT BATTERIES IN OFF POSITION EMERGENCY LIGHTS WILL NOT ILLUMINATE WHEN ARMED. ALL EMERGENCY LIGHTS OPERATE NORMALLY WHEN SELECTED ON. // SIGNOFF// REMOVED AND REPLACED NO 1 EMERGENGY LIGHTS BATTERY PACK WITH A CUSTOMER SUPPLIED REPAIRED PART. PERFORMED SATISFACTORY OPRATIONAL CHECK OF EMERGENCY LIGHTING SYSTEM I/A/W CE-680A AMM 33-50-00