What was found
EMER LIGHT NOT ARMED CAS AMBER MESSAGE DISPLAYED WHILE SWITCH IS IN ARMED POSITION. CORRECTIVE ACTION: ARRIVED ON SITE. FOUND FAULT TO BE ACTIVE. PERFORMED TS PER CONTACT CENTER'S RECOMMENDATION. COMPLIED WITH SL550-33-0001-REV.04 - EMERGENCY LIGHTS ISSUES - TROUBLESHOOTING TO IDENTIFY A FAULTY BATTERY PROPERLY. FOUND THE FWD EMER BATTERY TO BE AT FAULT. PERFORMED REPLACEMENT OF THE FWD EMER BATTERY WITH A REPAIRED UNIT. INSTALLED I.A.W PRAETOR 500 AMM TASK 33-51-01-400-801-A. PERFORMED OPS CHECKED I.A.W PRAETOR 500 AMM TASK. 33-51-01-710-801-A. NO DEFECTS NOTED AT THIS TIME. EMER BATTERY P/N OFF 7450LS-00 S/N OFF 007987 EMER BATTERY P/N ON 7450LS-00 S/N ON 007982