What was found
DURING DESCENT, NOTIFIED BY PAX THE EMERGENCY LIGHTS FLICKERING ON & OFF . LIGHT SWITCH WAS CYCLED & AFTER A FEW SECONDS, BEGAN FLICKERING AGAIN WITH SWITCH IN ARM. PERFORMED TC-FLT-33-1001. FOUND WITH BOTH BATTERIES CONNECTED, ALL EMERGENCY LIGHTS WOULD START TO FLICKER WITHIN APPROX 5 MINS. FOUND THE NR1 BATTERY ALLOWED THE LIGHTS TO FLICKER APPROX 5 MINS AFTER LIGHT SWITCH WAS PLACED TO ON. FOUND THE NR 2 BATTERY ALLOWED THE EMERGENCY LIGHTS TO ILLUMINATE & FLICKER IMMEDIATELY WITH SWITCH IN ARM. REMOVED FAULTY NR 1 FWD BATTERY & INSTALLED REPAIRED BATTERY IAW MM 33-52-01. REMOVED FAULTY NR 2 BATTERY & INSTALLED REPAIRED BATTERY IAW MM 33-52-01. PERFORMED OPS TEST IAW MM 33-52-01, NO DEFECTS NOTED.