What was found
DURING DECENT FROM 14000 FT TO 10000 FT, WITH SPEED BRAKE DEPLOYED AT 1/4 TO 1/2 WAY, THE AIRCRAFT VIBRATED MODRATLY AND MORE THAN NORMAL, 260 KNOTS AND DECENDING. THE AIRCRAFT WAS GROUNDED. MAINTENANCE ACCOMPLISHED TSM 27-30-00-810 AND GVI OF ALL SPOILERS FOR CONDITION AND SECURITY. ALL SPOILERS WERE SECURE IAW AMM 27-64-00. MAINTENANCE ALSO PERFORMED A SATISFACTORY OPERATIONAL CHECK.