What was found
CABIN EMERGENCY LIGHTS FLICKER WITH EMER LT SWITCH IN THE ARM AND ON POSITION CORRECTIVE ACTION: T/S TO FAULTY #2 BATTERY PACK, MCC REQUESTED R&R OF BOTH FWD AND AFT EMERGENCYBATTERIES. GAINED ACCESS TO #2 BATTER: REMOVING AFT WALL, AC CONDENSOR SHROUD, AND OUTFLOW VALVE SHROUDING. R&R AFT EMERGENCY BATTERY W/ REPAIRED UNIT. REINSTALLED ACCONDENSER SHROUD, OUTFLOW VALVE SHROUD, AND AFT WALL TO ORIGINAL CONFIGURATION.TEMPORARILY REMOVED PILOT AND COPILOT SEATS TO GAIN ACCESS TO #1 EMER BATTERY. R&R #1EMERGENCY BATTERY W/ REPAIRED UNIT, REINSTALLED BOTH SEATS AND ACCESS PANEL TOORIGINAL CONFIGURATION, VERIFIED BOTH SEATS OPERATE AS DESIGNED. PERFORMED OPS CHECK OF BOTH EMERGENCY BATTERIES AND OPS CHECK WAS GOOD. C/W EMB 505 AMM 33-52-01. (BAK).