What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY BACKUP BATTERY M33118 FAILS TO HOLD CHARGE FOR OVERHEAD FLIGHT CREW REST LIGHTING. REPLACED POWER SUPPLY AND BATTERY PACK (AALA202203070774) (M33118) PER AMM 33-29-10.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY BACKUP BATTERY M33118 FAILS TO HOLD CHARGE FOR OVERHEAD FLIGHT CREW REST LIGHTING. REPLACED POWER SUPPLY AND BATTERY PACK (AALA202203070774) (M33118) PER AMM 33-29-10.