What was found
FLT NR 580 - ATL - AIRCRAFT RETURNED, WAS UNABLE TO PRESSURIZE AFTER TAKEOFF. NO DOOR LIGHTS ON AIRCRAFT. AIRCRAFT RETURNED TO GATE FOUND E/E DOOR OPEN. FOUND DOOR LIGHT SWITCH INOP. DEFERRED DOOR SWITCH FOR REPAIR, CLOSED DOOR DISPATCHED AIRCRAFT. CONTROL NR DM05712, SEQ 33-17. (M)