Terminal Arrival Altitude (TAA) (GA023)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

Name

TerminalArrivalAltitude

Kind

FeatureType

Definition

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 centred 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.

Description

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.

Synonyms

TAA; Terminal Arrival Area

Accepted

2013-10-18

Geometry

point, multipoint, curve, multicurve, surface, multisurface, solid, multisolid

Subtype of

ZI028 Feature Entity

Attributes

TAA Terminal Arrival Altitude (TAA) Area Type — multiplicity 0..1; datatype TerminalArrivalAltitude_terminalArriveAltAreaTypeMeta; values: TAA_1 Straight In, TAA_2 Left Base, TAA_3 Right Base

Associations

InstrumentApproachProcTerminalArrivalAltitude → GA049 Instrument Approach Procedure (IAP) (0..*)

RWOI terms naming it

RWO_03679 TAA
RWO_03732 Terminal Arrival Altitude (TAA)
RWO_05244 Terminal Arrival Altitude Sector