Abstract: Methods and systems for data prioritization are described. In one example embodiment, the method includes the steps of assigning data an urgency and importance, and prioritizing the data using the assigned urgency and importance. In one specific example, such prioritization is then used in communicating, e.g., dispatching, the data. For example, such urgency and importance are used in prioritizing data to be communicated between an onboard aircraft system and a ground based system.