What was found
ARRIVING 180 KNOTS, AUTO-PILOT REPEATEDLY CAME OFF-LINE. ELEV FELT HEAVY ON CONTROLS. AT 140 KNOTS, PRIMARY TRIM WOULD NOT WORK. NO CAS MESSAGES RECEIVED EXCEPT WHEN SECONDARY TRIM ARMED. SECONDARY TRIM NOT ATTEMPTED. DOWNLOADED FAULT HISTORY FROM IAC NR 1&2. FOUND NO AP FAULTS DETECTED. PERFORMED PRIMARY TRIM CHANNEL A & B TRAVEL VERIFICATION OPS CK GOOD IAW MM. PERFORMED AP OPS CHECK IAW MM. OPS CK GOOD.