What was found
PDX-DURING CLIMBOUT, LOST NR 2 AHRS, ELEVATOR FEEL CAUTION LIGHT CAME ON. NR 2 RPM WENT FROM 900 TO 1020 RPM. YAW DAMPER WOULD NOT RE-ENGAGE. TOOK BOTH CONDITION LEVERS FROM 900 TO 1020 THEN BACK TO 850 RPM. SYMMETRICAL TORQUE RESTORED. RETURNED TO FIELD, LANDED AIRCRAFT WITHOUT FURTHER INCIDENT. REMOVED AND REPLACED AHRS. FDR & DATE SHOWS POWER LEVER WAS MOVED 5 DEGREES ABOVE RATING DETENT WHICH WILL CAUSE AN INCREASE OF RPM TO 1020, THIS IS NORMAL FOR MOVEMENT OF POWER LEVER IN THIS RANGE. ELEVATOR FEEL CAUTION WAS RELATED TO FAILURE OF AHRS. REPLACEMENT OF AHRS CLEARED ELEVATOR FEEL CAUTION LIGHT PROBLEM. AIRCRAFT RETURNED TO SERVICE.