What was found
CABIN EMERG LIGHT: DURING PREFLIGHT WITH THE EMERGENCY LIGHTS IN THE ON OR ARMED POSITION, LIGHTS BEGAN TO FLASH OFF AND ON AFTER ABOUT 15 SECONDS AND WILL NOT STOP FLASHING UNTIL THE SWITCH GETS PLACED IN THE OFF POSITION. ///SIGN-OFF/// PERFORMED NJA TC-505-33-200403 DATED 04/23/20 EMBRAER 505 EMER LIGHT TOP CHARGE. VERIFED NOT LIGHT WERE FLICKERING. PERFORMED OPS CHECK OF LIGHTING TWICE AND NO FLIKERING. WORK DONE IAW NJA TASK CARDS AND EMB 505 M.M. 33-52-01.