What was found
AIRCRAFT WAS GROUDNED: WHILE ACCOMPLISHING CARD 2908 MID CABIN M1670 BATTERY PACK FAILED. MAINTENANCE REPLACED BATTERY PACK PER AMM 33-51-06.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUDNED: WHILE ACCOMPLISHING CARD 2908 MID CABIN M1670 BATTERY PACK FAILED. MAINTENANCE REPLACED BATTERY PACK PER AMM 33-51-06.