What was found
AFT AIRSTAIR LIGHT ON S/O PANEL ON AFTER TAKEOFF. ACN RELEASED FOR SERVICE PER MEL/CDL: 52-06-B. AIRSTAIR UP UPON ARRIVAL. INSPECTED SYSTEM, HANDLE IN CORRECT LOCK POSITION. CYCLED AIRSTAIR ALL INDICATIONS NORMAL AT THIS TIME. MACH SHOWS NO HISTORY FOR LAST 60 DAYS. PER MEL - LOWER AFT AIRSTAIR CONTROL STATION RED NOT LOCKED WARNING LIGHT OPS NORMALLY. DURING AIRSTAIR OPERATION & EXTINGUISHES WHEN AIRSTAIR IS LOCKED UP. CYCLED AIRSTAIRS SEVERAL TIMES ALL FUNCTIONS OF AIRSTAIRS OP CHECKS GOOD AS PER AMM 52-62-001-0, DEBRIEFED INCOMING FLIGHT CREW INDICATIONS WERE NORMAL.