What was found
UPON ROTATION FOS AIRSPEED TAPE WENT AWAY. RECEIVED IAS DISAGREE EICAS. CAPTAIN FLIGHT DIRECTOR DROPPED PITCH INDICATOR. RECEIVED RUDDER RATIO AND MACH/SPD TRIM EICAS MESSAGES. ELEV ASYM STATUS MESSAGE. EMERGENCY DECLARED. AMM: 34-12-01-4 FIM: 27-09 TREE 813 AMM: 34-11-00-3 AMM: 34-12-00-5 FIM: 27-09 TREE 809. REMOVED AND REPLACED RIGHT ADC. FLUSHED F/O'S PITOT SYSTEM AND FOUND BUG STUCK IN PITOT TUBE, FLUSHED AGAIN WITH CLEAN RESULTS. PERFORMED FIM FOR MACH/SPD TRIM MESSAGE, NO FAULTS FOUND. PERFORMED BITE ON ELEVATOR ASSY LIMIT MODULE (SAM) NO DEFECTS NOTED. ALL FAULT BALLS CLEARED. THE ADC STILL NEEDS MCDP TEST 30 PERFORMED. STEP 3G(5). OPERATIONAL TEST PASSED.