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In advanced noise abatement procedures, the approach of an aircraft is optimized to reduce the noise on the ground. A drawback of many noise abatement procedures is that air traffic controllers are forced to increase spacing, leading to a significant reduction of runway capacity. A display, named the Time-Space Diagram, has been developed to assist controllers in metering, sequencing and merging aircraft flying noise abatement procedures such as the Continuous Descent Approach. Although initial tests were promising, it was recommended that the information could be enhanced by supporting common controller spacing techniques. The improved display was tested in an experiment, in both low and high traffic rate scenarios. Results indicate that the use of the new display results in a significant reduction of controller workload. It also led to a reduction of the number of instructions to the pilots, suggesting a reduced workload on the flight deck as well.