What was found
SEVERAL EMERGENCY SIGNS AND LIGHTS INOP, EXTERIOR LIGHT FWD OF LT WING, MAIN DOOR LIGHT, MAIN ENTRANCE OVERHEAD LIGHT & FWD CABIN EXIT SIGN. FOUND EMERGENCY BATTERY 1 UNINSTALLED ON COMPARTMENT FLOOR. REINSTALLED BATTERY 1 IN REFERENCE WITH 33-50-04-400-801-A. OPS CHECK NORMAL.