What was found
AIRCRAFT WAS GROUNDED: EMERGENCY LIGHT BATTERY PACK FAIL TEST EMR R (12WL). MAINTENANCE REPLACED EPSU BATTERY, BITE TEST OK.IAW AMM 33-51-38
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: EMERGENCY LIGHT BATTERY PACK FAIL TEST EMR R (12WL). MAINTENANCE REPLACED EPSU BATTERY, BITE TEST OK.IAW AMM 33-51-38