What was found
EMERGENCY BATTERY AT STA.400 INOPERABLE. REMOVED AND REPLACED EMERGENCY BATTERY AT STA.400 WITH SERVICEABLE UNIT AND TEST IAW B737-300 AMM 33-51-51, TEST GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EMERGENCY BATTERY AT STA.400 INOPERABLE. REMOVED AND REPLACED EMERGENCY BATTERY AT STA.400 WITH SERVICEABLE UNIT AND TEST IAW B737-300 AMM 33-51-51, TEST GOOD.