What was found
EMERGENCY LIGHTS WILL NOT STAY ON. REMOVED AND REPLACED BATTERY PACKS PS35, PS36, PS37, PS38, PS 43 IAW CRJ 900 AMM 33-51-17. OPS TESTS PASSED IAW CRJ 900 AMM 33-51-00 AND 33-51-17. NO FAULTS NOTED AT THIS TIME. A/C OK FOR SVC. PNS 2013-1A, 2013-1ASMI