Abstract: A method of and system for managing data transmissions from a plurality of targets (e.g., aircraft), each of which is equipped with an on-board broadcast system that transmits data within an established time frame. The method includes the steps of defining at least a first geographic region and a second geographic region, for each geographic region, dividing the established time frame into a contiguous set of time slots, defining a time slot sequence order by which each target within each geographic region will transmit data within said established time frame, and instructing each aircraft located within the first geographic region to transmit its data at a specific index point or offset within the time slot sequence order for the first geographic region and each aircraft located within the second geographic region to transmit its data at a specific index point or offset within the time slot sequence order for the second geographic region.