What was found
AT FL 340 AUTOPILOT 2 ENGAGED THROTTLES STARTED ADVANCING TOWARD MAX .CAPT AIRSPEED INDICATED LESS THAN 80 KTS ECAM DISPLAYED FWD TRANSFER ONLY . SELECTED CAPT'S ADC INSTTO STYS 2. COMPLIED WITH QRH FOR SINGLE ADC FAILER NO LAST LEG FAULTS RECORDED IN MTP, ACCOMPLISHED AFS TEST ALL TEST PASS, ACCOMPLISHED ADS TEST, ALL TEST PASS. ACCOMPLISHED PITOT PNEUMATIC SYSTEM 1 FUNCTIONAL CHECK, NO LEAKS OR FAULTS FOUND. REPLACED CAPT PITOT PROBE 41DA, PRECAUTIONARY, ALL TEST PASS. AMM: 22-40-00-05, 34-10-00-05, AND 34_11_15_04.