What was found
"CONTINOUS UNCOMMANDED STAB TRIM MOVEMENT PLUS OR MINU 0.1 DEGREE ON 2 SEC PERIOD STARTING IN CRUISE CONTINUING TO LANDING . THIS CAUSED PLUS OR MINUS 500 FPM VS OSCILLATES WITH AP OFF AND STICK NUETRAL . AMPLITUDE DECREASE AS SPEED AND ALTITUDE REDUCED. HELD TRIM TO STOP OSCILLATE DURING APPROACH NO ECAM FAULTS-PERFORMED OPS TEST OF THS ACUATOR IAW AMM 27-96-00 PER TSM 27-93-00-810-844. PERFORMED ELEV SERVO OSCILLATION TEST IAW AMM 27-34-00. PERFORMED ELEV SERVOS 34C32 + 34C34 IAW AMM 27-34-51. CONT ON LP 2349539-2. NK1563 11-SEP-19"