As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: UPON AIRCRAFT REACTIVATION FROM STORAGE, EMERGENCY LIGHTS POWERED BY MODULE M33098 WILL NOT ILLUMINATE DURING EMERGENCY LIGHTING TEST. REMOVED AND REPLACED BATTERY PACK IN MODULE M33098 WITH A SERVICEABLE UNIT AND OPERATIONAL CHECKS GOOD, PER AMM 33-51-06.