What was found
AIRCRAFT WAS GROUNDED: AFTER TAKEOFF AND UPON GEAR RETRACTION: ECAM DISPLAYED "SHOCK ABSORBER FAULT". GEAR MADE VERY LOUD VIBRATION NOISE. LANDING GEAR DOWN INDICATORS SHOWED "UNLOCK". AFTER ANOTHER CYCLE OF LOWERING & RAISING GEAR WE EXPERIENCED IDENTICAL NOISE AND VIBRATION, THEN THE GEAR STOWED NORMALLY IN THE UP & LOCKED POSITION. **ORIGINAL REPORT WAS AALA202201144820** REPLACED MAIN LANDING GEAR PROXIMITY SENSORS 24GA, 20GA (AALA202201197612) AND 22GA (AALA202201192727). A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.