What is a TAA?
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Answered By AOPA
What is a TAA?
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AOPA Staff Answer
A Terminal Arrival Area (TAA) is a procedure for transitioning from the en route environment to the approach environment for aircraft on a IFR flight plan. It is presented both textually and graphically on an approach chart.

Some approach procedures utilize ground-based navigation aids, such as VORs and ILSs. They include charted directional feeder routes from airways or ground based fixes, each with clearly labeled courses and minimum altitudes to fly, that lead to the final approach segment

The objective of the TAA is to provide a seamless this transition for aircraft equipped with a Flight Management System (FMS) and/or Global Positioning System (GPS) navigational equipment.

Use of FMS and/or GPS equipment simplify approach procedures by enabling TAA designers, in most cases, to replace specific directional feeder routes and ground based fixes with area navigation techniques to route traffic into the terminal environment with little required air traffic control interface (headings and altitudes) to ensure standard obstacle clearances compatible with the instrument procedure associated with it.