What was found
BROKEN WIRE ON HARNESS TO EMER LIGHTS CAUSING BATTERY PACK BATTERY IN FIRST CLASS TO GO DEAD. REPLACED BATTERY PACK & REPAIRED WIRE ON HARNESS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BROKEN WIRE ON HARNESS TO EMER LIGHTS CAUSING BATTERY PACK BATTERY IN FIRST CLASS TO GO DEAD. REPLACED BATTERY PACK & REPAIRED WIRE ON HARNESS.