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Baby steps to NextGen: figuring out the what ATC's NextGen service will be is a hot debate, but pieces of the puzzle are already being installed.

Publication: IFR
Publication Date: 01-OCT-08 		Format: Online
Delivery: Immediate Online Access
Full Article Title: Baby steps to NextGen: figuring out the what ATC's NextGen service will be is a hot debate, but pieces of the puzzle are already being installed.(SYSTEM NOTES)(air traffic control)

Article Excerpt
Center calls, "Turn 20 degrees left, vectors behind traffic at 10 o'clock, 15 miles." You acknowledge, turn and see the traffic closing on your MFD display. You realize you'll definitely pass less than the required five miles from the traffic, and it's at your altitude. And you're in the soup.

When the controller clears you to resume own navigation, his voice sounds normal--no hard breathing or high-pitched voice. How is it possible he didn't lose separation?

The Tight Pass

The controller was using three-mile separation instead of five. This is the world of En Route Automation Modernization (ERAM), the FAA's former display system replacement DSR program with new blood. In areas designated by the FAA, controllers will be authorized to use three-mile separation between aircraft. Controllers have the ability to depict these areas on their display and the data block changes when it enters an area of reduced separation to alert the controller that reduced separation is approved.

ERAM will support the NexGen systems such...

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