What was found
ON FLIGHT 3803 THE FLIGHT CREW REPORTED THE EMERGENCY LIGHTS CAME ON BUT DID NOT STAY ON. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED BATTERY PACKS NUMBERS 1, 2, 3 AND 4 IAW CRJ700 AMM 33-51-17. EMERGENCY LIGHTS WERE LEFT IN ON POSITION. BATTERIES WERE DRAINED. BATTERIES P/N 2013-1A, NR 1 S/N 68828 TSN 9870.26 CSN 8871 TSI 1069.49 / NR 2 S/N 104844 TSN 3668.42 CSN 3101 TSI 1779.15 / NR 2 S/N 65487 TSN 17430.35 CSN 16067 TSI 1779.15 / NR 4 S/N 78160. THE OPERATIONAL TEST WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.