What was found
CAPTAIN`S PFD ALTITUDE ALERT FOR TRANSITION LEVEL AND TRANSITION ALTITUDE DOES NOT ILLUMINATE. ALT DISAGREE EICAS MESSAGE AT FL 280 DURING CLIMB,ON LEVEL OFF AT 330 COPILOTS ALTITUDE WAS 300 FT HGH COMPARED TO CAPTAIN`S. AND STANDBY ALTIMETERS. INSPECTED PITOT TUBES, REPLACED THE RIGHT ADC, TESTED OK. PERFORMED PITOT STATIC SYSTEM TEST, TESTED OK. AUTO-LAND UNIQUE TEST OK.