What was found
PITCH TRIM ACTIVATED WITHOUT COMMAND AT 500 FT AGL, DURING APPROACH. THREE TRIM WHEEL NOSE DOWN ROTATIONS, STOPPED WITH OPPOSITE TRIM ACTIVATION. ACFT GROUNDED. ACCOMPLISHED DFCS BITE, BITE GRP 20 IAW FIM 22-11, TASK 801. CURRENT STATUS SHOWS NO FAULTS. FAULT HISTORY DID NOT LOG ANY FAULTS FOR ELEVATOR POSITION SENSOR. ACCOMPLISHED DFCS LRU REPLACEMENT TEST FOR PITCH SENSOR, BITE GROUP 47 IAW AMM 22-11-30/501. ALL TESTS PASSED. ACCOMPLISHED LAND VERIFY TEST, BITE GROUP 49 IAW AMM 22-11-00/201. ALL TESTS PASSED.