What was found
CABIN EMERG LIGHT: ALL EMERGENCY LIGHTS ARE ILLUMINATING WITH THE SWITCH IN THE ARMED POSITION. //SIGNOFF// PERFORMED OPERATIONAL TEST OF EMERGENCY BATTERY AND FOUND #2 BATTERY FAILED FUNCTIONAL TEST IAW P300 AMM 33-52-00. PERFORMED REPLACEMENT OF #2 BATTERY WITH ONW IN NEW CONDITION IAW PHENOM 300 AMM 33-52-01. PERFORMED OPERATIONAL CHECK OF EMERGENCY BATTERY SYSTEM IAW PHENOM 300 AMM 33-52-00. NO DECECTS NOTED AT THIS TIME. OFF P/N 74550LS-00 S/N 006553