What was found
REPEAT WRITE-UP: NR 2 PFD DISPLAYED ERRATIC AOA INDICATIONS. ON TAKE-OFF AND INITIAL CLIMB OUT THE AOA WOULD DISPLAY RED AT 1.0 (FULL SCALE) AND THE LOW SPEED TAPE WOULD COME ALL THE WAY UP AND DISPLAY THE AIRSPEED RED. THIS ACTIVITY TAPERED OFF AND STOPPED AFTER CLIMBING ABOUT 3000'. DURING CRUISE WITH NORMAL AOA AT 0.3, THE #2 PFD AOA WOULD OCCASIONALLY GO TO 0.0 FOR A FEW SECONDS. ALL INDICATIONS ON THE NR 1 PFD WERE COMPLETELY NORMAL DURING ALL OF THIS. NO STICK SHAKER OR AUDIBLE STALL WARNING CAME ON AT ALL. REMOVED INOP AOA TRANSMITTER P/N: 856-0077:010 S/N: FK2281 AND REPLACED WITH CUSTOMER SUPPLIED NEW AOA TRANSMITTER P/N: 856-0077-010 S/N: FK2264 OPERATIONAL CHECK GOOD NO DEFECTS NOTED. REF: BOMBARDIER MM 34-24-07