What was found
ENROUTE; DURING ENTIRE FLIGHT; THE EMERGENCY LIGHTING SYSTEM ON AIRCRAFT LEFT (CA SIDE) FROM ROW 26 AFT FORWARD; AND INCLUDING THE AFT GALLEY AREA ILLUMINATED FOR APPROXIMATELY 30 SECONDS 6 MIN INTERV ENROUTE DURING ENTIRE FLIGHT THE EMERGENCY LIGHTING SYSTEM ON AIRCRAFT LEFT (CA SIDE) FROM ROW 26 AFT FORWARD AND INCLUDING THE AFT GALLEY AREA ILLUMINATED FOR APPROXIMATELY 30 SECONDS AT 6 MINUTE INTERVALS<[01] ISOLATED AND CONFIRMED BATTERY PACK (M1673) TO BE FAULTY. REMOVED AND REPLACED BATTERY PACK AND CHARGING BASE PER M/M 33-51-14 AND OPS CHK GOOD PER M/M 33-51-00.