What was found
ALL CABIN EMER LIGHTS WORK IN THE ON POSITION BUT ONCE SWITCH IS MOVED TO ARM ALL LIGHTS EXTINGUISH. HAVE CHARGED UP 3 DAYS IN A ROW AND BELIEVE THE BATTERIES MUST BE DEAD. CORRECTIVE ACTION: REMOVED FAULTY #1, #2, #3 AND #4 EMERGFENCY LIGHTING BATTERY PACKS AND INSTALLED CUSTOMER PROVIDED NEW PARTS. OPERATION CHECK WAS GOOD WITH NO DEFECTS NOTED. ALL WORK ACCOMPLISHED IN REFERENCE TO CE 680A AMM 33-50-00 AND 33-50-06. #1 EMERGENCY LIGHTING BATTERY PACK P/N OFF: CBS28-1 P/N ON: 6430028-1 S/N OFF: 006217 S/N ON: E25-10620 #2 EMERGENCY LIGHTING BATTERY PACK P/N OFF: CBS28-1 P/N ON: 6430028-1 S/N OFF: 006223 S/N ON: E25-10621 #3 EMERGENCY LIGHTING BATTERY PACK P/N OFF: CBS28-1 P/N ON: 6430028-1 S/N OFF: 009807 S/N ON: E25-10622 #4 EMERGENCY LIGHTING BATTERY PACK P/N OFF: CBS28-1 P/N ON: 6430028-1 S/N OFF: 009808 S/N ON:E25-10623