THE ELEVATOR WHILE DESCENDING, STOPPED 32 FEET FROM THE UNDERGROUND LANDING AREA. THE POWER WASTURNED OFF AND BACK ON CORRECTING A SUPPECTED COMMUNICATIONS PROBLEM. FURTHER OPERATIONAL EXAMIN ATIONS AND MINOR ADJUSTMENTS SHOWED THE ELEVATORTO BE FUNCTIONING AS REQURIED.THE ELEVATOR WAS DOWN APPROX. 20 MIN, BUT FURTHER EXAMINATION ANDTROUBLE SHOOTING EXTENDED THE PEROID FOR SEVERAL