Transport Canada CF-2019-09

Requires, within 30 days from the effective date of this AD, an amendment to the applicable airplane flight manual supplement by incorporating the navigation system limitation to prohibit the editing of the CLIMB TO altitudes and the use of the Temperature Compensation on the FMS. This limitation stems from the discovery that if the crew edits a CLIMB TO altitude in a departure or a missed approach procedure, either manually or by activating the Temperature Compensation, the FMS will remove the database’s turn direction (if any) on the following leg. The FMS will command the aircraft to turn in the wrong direction after sequencing the CLIMB TO leg if the shortest turn direction is different from the required turn direction onto the next leg.