As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED (SHORT TERM STORAGE): 4R DOOR EMERGENCY POWER ASSIST SYSTEM GREEN TEST LIGHT DID NOT COME ON WHEN EMERGENCY POWER ASSIST SYSTEM IS ARMED. REMOVED AND REPLACED EMERGENCY POWER ASSIST SYSTEM 9V BATTERY AT DOOR 4R AND PERFORMED SUCCESSFUL OPS TEST, IAW AMM 52-11-20.