What was found
EMER LIGHTS IN THE TUNNEL, LOWER SIDEWALL LIGHTS INOPERATIVE. REPLACED BATTERIES, NO HELP. OPENED FIRST LIGHT AFT OF AIRSTAIR DOOR TO CHECK BULB. FOUND BOTH TERMINAL SCREWS BACKED-OFF. TIGHTENED SCREWS IAW AMM 20-50-04. OPERATIONS CHECKED GOOD IAW AMM 33-53-01.