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3. The standard TAA based on the "T" design shaped sectors with the boundaries identified by
consists of three areas defined by the Initial Approach magnetic courses TO the (IF/ IAF), and may contain
Fix (IAF) legs and the intermediate segment course stepdown sections defined by arcs based on RNAV
beginning at the IF/IAF. These areas are called the distances from the IF/IAF. (See FIG 5-4-4). The
straight-in, left-base, and right-base areas. (See right/left-base areas can only be subdivided using
FIG 5-4-3). TAA area lateral boundaries are identi- arcs based on RNAV distances from the IAFs for
fied by magnetic courses TO the IF/IAF. The those areas.
straight-in area can be further divided into pie-
4. Entry from the terminal area onto the proced-
ure is normally accomplished via a no procedure turn
(NoPT) routing or via a course reversal maneuver.
The published procedure will be annotated "NoPT"
to indicate when the course reversal is not authorized
when flying within a particular TAA sector. Other-
wise, the pilot is expected to execute the course
reversal under the provisions of 14 CFR Section
91.175. The pilot may elect to use the course reversal
pattern when it is not required by the procedure, but
must receive clearance from air traffic control before
beginning the procedure.
(a) ATC should not clear an aircraft to the left
base leg or right base leg IAF within a TAA at an inter-
cept angle exceeding 90 degrees. Pilots must not
execute the HILPT course reversal when the sector or
procedure segment is labeled "NoPT."
(b) ATC may clear aircraft direct to the fix
labeled IF/IAF if the course to the IF/IAF is within the
straight-in sector labeled "NoPT" and the intercept
angle does not exceed 90 degrees. Pilots are expected
to proceed direct to the IF/IAF and accomplish a
straight-in approach. Do not execute HILPT course
reversal. Pilots are also expected to fly the straight-in
approach when ATC provides radar vectors and mon-
itoring to the IF/IAF and issues a "straight-in"
approach clearance; otherwise, the pilot is expected to
execute the HILPT course reversal.
AIM, Paragraph 5-4-6 , Approach Clearance
(c) On rare occasions, ATC may clear the air-
craft for an approach at the airport without specifying
the approach procedure by name or by a specific ap-
proach (for example, "cleared RNAV Runway 34
approach") without specifying a particular IAF. In
5-4-10 Arrival Procedures