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AIM

10/12/17

5−4−14

Arrival Procedures

7. TAAs may be modified from the standard size

and shape to accommodate operational or ATC

requirements. Some areas may be eliminated, while

the other areas are expanded. The “T” design may be

modified by the procedure designers where required

by terrain or ATC considerations. For instance, the

“T” design may appear more like a regularly or

irregularly shaped “Y,” upside down “L,” or an “I.”

(a) FIG 5−4−7 depicts a TAA without a left

base leg and right base leg. In this generalized

example, pilots approaching on a bearing TO the

IF/IAF from 271 clockwise to 089 are expected to

execute a course reversal because the amount of turn

required at the IF/IAF exceeds 90 degrees. The term

“NoPT” will be annotated on the boundary of the

TAA icon for the other portion of the TAA.

FIG 5−4−7

TAA with Left and Right Base Areas Eliminated

(b) FIG 5−4−8 depicts another TAA modific-

ation that pilots may encounter. In this generalized

example, the left base area and part of the straight-in

area have been eliminated. Pilots operating within the

TAA between 210 clockwise to 360 bearing TO the

IF/IAF are expected to proceed direct to the IF/IAF

and then execute the course reversal in order to

properly align the aircraft for entry onto the

intermediate segment or to avoid an excessive

descent rate. Aircraft operating in areas from 001

clockwise to 090 bearing TO the IF/IAF are expected

to proceed direct to the right base IAF and not execute

course reversal maneuver. Aircraft cleared direct the

IF/IAF by ATC in this sector will be expected to

accomplish HILTP. Aircraft operating in areas 091

clockwise to 209 bearing TO the IF/IAF are expected

to proceed direct to the IF/IAF and not execute the

course reversal. These two areas are annotated

“NoPT” at the TAA boundary of the icon in these

areas when displayed on the approach chart’s plan

view.

3/15/07

7110.65R CHG 2

AIM

2/28/19