What was found
(CAN) ROCKWELL COLLINS PROLINE FUSION EQUIPPED AIRCRAFT, ADAPTIVE FLIGHT DISPLAY AFD-3700. DEFECT REPORTED AS `NUMEROUS ERRONEOUS CAS MESSAGES SHOWING UP ON RETURN TO YEG, UNCOMMANDED FLL CHANGE FROM 160 TO 99 IN CLIMB OUT OF YQU`. AFD 2 DETERMINED TO HAVE FAILED INTERNALLY. MANUFACTURER AWARE OF DIFFICULTIES THROUGH WARRANTY RETURN PROGRAM. AFD REPLACED, SOFTWARE, CHARTS AND CHECKLISTS RELOADED AND GROUND TESTED SERVICEABLE. (TC# 20180808020)