Terminal Arrival Altitude
|Term||Terminal Arrival Altitude|
The lowest altitude that will provide a minimum clearance of 300 metres (1000 feet) above all objects located in an arc of a circle defined by a 46 kilometre (25 nautical mile) radius centered on the initial approach fix (IAF), or where there is no IAF then centered on the intermediate approach fix (IF), delimited by straight lines joining the extremity of the arc to the IAF/IF.
The combined TAAs associated with an approach procedure shall account for an area of 360 arc degrees around the IF. Terminal Arrival Areas may be provided for RNAV approaches to facilitate descent and entry to the procedure. TAAs are associated with an RNAV procedure based upon the 'T' or 'Y' Arrangement. The Basic 'T' approach segment configuration is the standard configuration for transition from the en route to the terminal environment. The standard arrangement consists of three TAAs: straight-in, right base, and left base.