What was found
ON TAKE OFF, AT APPROXIMATELY 1500, AGL GOT ECAM. F/O PERFORMED ECAM ACTION, SHOCK ABSORBER FAULT, THAT CLEARED AND THEN GOT ECAM GEAR NOT LOCKED IN UP POSITION. PERFORMED THAT ECAM WHICH CLEARED ALL PROBLEM WITH NO STATUS MESSAGE. AIRCRAFT LANDED WITHOUT INCIDENT. AIRCRAFT FLOWN BACK UNDER MEL 32-31-00. T/S 24GA AT FAULT. REPLACED 24GA PROXIMITY SENSOR IAW AMM 32-31-73-04 AND BITE CK OK.