What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: CAPTAIN SPEED TAPE AND ALTITUDE TAPE AND VVI BLANKED INFLIGHT WITH ALTITUDE AND SPEED ANNUNCIATED ALSO DISPLAY SOURCE 1 ILLUMINATED INFLIGHT. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT ORD. REMOVED AND REPLACED LEFT STATIC AIR DATA MODULE (AALA202601081069) PER AMM 34-21-04. REMOVED AND REPLACED DEU 1 (AALA202601081743), PER AMM 31-62-21. REMOVE AND REPLACED FCC-A (AALA202601089924) AND FCC-B (AALA202601085803), PER AMM 22-11-33. ALL OPERATIONAL CHECK GOOD.