What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO TUL. AFTER TAKEOFF AMBER SPEED LIMIT FLAG ON UPPER LEFT CAPARTAINS PFD INTERMITTENT WITH ASSOCIATED LOSS OF FLIGHT DIRECTOR IN PFD AND HUD INTERMITTENT. RED LOWER AIRSPEED BAR INTERMITTENTLY. THE AIRCRAFT LANDED SAFELY AT TUL WITHOUT FURTHER INCIDENT. THE CREW ALSO REPORTED THAT AFTER LANDING, THE #1 STICK SHAKER TEST FAILED. MAINTENANCE REPLACED THE LEFT-HAND ANGLE OF ATTACK SENSOR (AOA) PER AMM 34-21-05-400-801 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.