MissionPlanner.MAVLinkInterface.SendAck C# (CSharp) Method

        public void SendAck()
        {
            mavlink_command_ack_t ack = new mavlink_command_ack_t();
            ack.command = (byte) MAV_CMD.PREFLIGHT_CALIBRATION;
            ack.result = 0;

            // send twice
            generatePacket((byte) MAVLINK_MSG_ID.COMMAND_ACK, ack);
            System.Threading.Thread.Sleep(20);
            generatePacket((byte) MAVLINK_MSG_ID.COMMAND_ACK, ack);
        }