What was found
THE AP PITCH MISTRIM ILLUMINATED AT FL410. AFTER THE AUTO PILOT WAS DISENGAGED, DISCOVERED THE ELEVATOR PITCH TRIM WAS JAMMED AND COULD NOT BE MOVED ELECTRICALLY OR MANUALLY IN THE NOSE UP DIRECTION BUT COULD SLIGHTLY BE TRIMMED MANUALLY BUT NOT ELECTRICALLY IN THE NOSE DOWN DIRECTION. DURING THE DESCENT WE HAD MORE TRIM AVAILABLE TO US BUT WAS STILL LIMITED. AFTER LANDING THE ELEVATOR TRIM APPEARED TO OPERATE NORMALLY. R & R LT AND RT ELEVATOR TRIM TAB ACTUATOR IAW MM 27-31-01. OPS CHECK GOOD.