What was found
THE CABIN EMERGENCY LIGHTING ILLUMINATES WHEN THE EMERGENY LIGHT SWITCH IS PLACED TO ARM. TURNED OFF WHEN THE SWITCH IS TURNED OFF. CONFIRMED DISCREPANCY, REVIEWED SL505-33-0005 REV 5 EMER LIGHT T/S & FOUND THAT BOTH BATTERY PACKS ARE CAUSING THE ISSUE CONFIRMED AND SWITCH NOT TRIPPED. REMOVED FWD EMERGENCY LIGHT BATTERY PACK & INSTALLED A REPAIRED UNIT. REMOVED AFT EMERGENCY LIGHT BATTERY PACK PN 74501S-00, SN 007356, & INSTALLED A REPAIRED UNIT. COMPLETED OPS AND CHARGING CHECKS AS REQUIRED WITH NO FAULT. WORK DONE IAW AMM 33-52-01.