Mon, Sep 22, 2008
According to the FAA, passenger
delays are being reduced thanks to a program that increases the
efficient use of runway capacity at major airports. Airlines are
reporting major savings in time – and money – because
of Traffic Management Advisor (TMA), which analyzes traffic
approaching an airport hundreds of miles away and calculates
scheduled arrival times to maximize arrival capacity.
TMA’s metering capability has resulted in capacity
increases of 3 to 5 percent – with some airports seeing even
higher results. At Newark, where the system recently began
operating, preliminary data shows TMA's time-based metering
function is already helping reduce delays. One airline reports
reduced flying time of four minutes per flight into Newark.
TMA is also expected to be up and running at John F. Kennedy and
LaGuardia airports next year.
TMA provides controllers with automated information on airport
arrival demand and available capacity to improve sequencing and to
better balance arrival and departure rates. Essentially, TMA
evaluates the inventory that is scheduled for a particular
Overall, ground delays and time in the air are reduced with
The benefit of TMA and its time-based metering capability can be
seen mostly when demand exceeds capacity as the system calculates
how best to flow traffic into an airport during each hour.
Using TMA, holding patterns have been reduced going into
Phoenix. TMA has also been used to manage throughput for both
arrivals and departures at Las Vegas.
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