What was found
AIRCRAFT WAS GROUNDED: EMERGENCY LIGHTS WERE FLASHING ON AND OFF IN FLIGHT, LAST 6 ROWS ON THE RIGHT SIDE. MAINTENANCE REPLACED M33409 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 GROUNDED: EMERGENCY LIGHTS WERE FLASHING ON AND OFF IN FLIGHT, LAST 6 ROWS ON THE RIGHT SIDE. MAINTENANCE REPLACED M33409 BATTERY PACK PER AMM 33-51-06.