As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LTS FAILED FIRST FLIGHT TEST. CORRECTIVE ACTION: TECHS FOUND THE EMERGENCY LIGHTS LIGHTS ASSOCIATED TO BATTERY PACKS #1 & #3 INOP. MCC REQUEST TECHS CHANGE ALL 4 BATTERY PACKS PACKS. TECHS REMOVED AND REPLACED ALL 4 EMERGENCY LIGHT BATTERY PACKS PER CE-680 AMM 33-50-10. NO FURTHER DEFECTS NOTED. ALL EMERGENCY LIGHTS ARE NOW OPERABLE AS DESIGNED. TECHS ALLOW THE BATTERY PACKS TO RECHARGE VIA APU POWER DUE TO FBO CONSTRAINTS NOT HAVING A GPU AVAILABLE.