What was found
ATB, DUE TO ECAM NAV IAS DISCREPANCY CAPT SIDE A/S 20 KNOTS LESS THAN FO SIDE A/S & ISIS. FOLLOWED TSM 34-10-00-810-995-A. PERFORMED FLUSH OF #1 PITOT SYS IAW 34-11-00. PERFORMED LOW RANGE LEAK CHECK IAW AMM 34-11-00-790-801 & 34-22-25-790-801 CHKD OK. PERFORMED SYS TEST OF ADR 1 & 2 & IR SYS TEST IAW AMM 34-13-00/34-14-00, TEST OK. FOUND CAPT PFD ALTITUDE -190 FT & F/O ALTITUDE -100 FT. SWAPPED ADM'S WITH F/O'S SIDE ALTITUDE. ON CAPT'S SHOWS - 30 FT. SUSPECT BOTH STATIC ADM'S ON CAPT SIDE BAD. SWAPPED BACK TO ORIGINAL. R & R ADM (19FP1). IAW AMM 34-11-17. PERFORMED FUNCTIONAL TEST OF ATTITUDE & AIRSPEED DATA IAW AMM 34-13-00-720-801-A. ALL PARAMETERS PASS MULTIPLE TIMES. OK FOR SVC.