As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WITH SPEED BRAKES EXTENDED DURING DESCENT AIRCRAFT SHOOK MODERATELY, THEN SPEED BRAKE 345 BOTH SIDES TOOK EXCESSIVE TIME TO RETRACT WITH SPEED BRAKE LEVER AT RETRACT POSITION. MAINTENANCE FOUND THE LEFT HAND ELEVATOR INBOARD GREEN SERVO CONTROL VALVE ROD END MISSING BUSHINGS AND REPLACED THE RODE END PER AMM 27-34-51. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.