What was found
CA DECLARED EMERGENCY DUE TO UNRELIABLE AIRSPEED. AMBER IAS ON AIRSPEED INDICATOR FOLLOWED BY SPS ADVANCED EICAS MSG. QRH PROCEDURE C/W. AIRSPEED RETURNED TO NORMAL AND MSG CLEARED IN DESCENT.CAPT DECLARED EMERGENCY DUE TO UNRELIABLE AIRSPEED. -C/A-INTERROGATED CMC AND FOUND NO PERTINENT MESSAGES, FOUND NO WATER IN PITOT DRAINS, PITOT HEAT FUNCTIONS NORMALLY IAW AMM 30-31-00-700-801-A PERFORMED PITOT-STATIC LEAK TEST IAW AMM 34-13-00 OPS CHECK GOOD AIRCRAFT OK FOR SERVICE