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6/17/21 

AIM 

4.  Departures from: 

(a) 

A primary or satellite airport with an 

operating control tower. Two-way radio communica-
tions must be established and maintained with the 
control tower, and thereafter as instructed by ATC 
while operating in the Class D airspace. 

(b) 

A satellite airport without an operating 

control tower. Two-way radio communications must 
be established as soon as practicable after departing 
with the ATC facility having jurisdiction over the 
Class D airspace as soon as practicable after 
departing. 

5.  Aircraft Speed. 

Unless otherwise autho-

rized or required by ATC, no person may operate an 
aircraft at or below 2,500 feet above the surface 
within 4 nautical miles of the primary airport of a 
Class D airspace area at an indicated airspeed of more 
than 200 knots (230 mph). 

c. 

Class D airspace areas are depicted on Sectional 

and Terminal charts with blue segmented lines, and 
on IFR En Route Lows with a boxed [D]. 

d. 

Surface area arrival extensions: 

1. 

Class D surface area arrival extensions for 

instrument approach procedures may be Class D or 
Class E airspace. As a general rule, if all extensions 
are 2 miles or less, they remain part of the Class D 
surface area. However, if any one extension is greater 
than 2 miles, then all extensions will be Class E 
airspace. 

2.

 Surface area arrival extensions are effective 

during the published times of the surface area. For 
part–time Class D surface areas that revert to Class E 
airspace, the arrival extensions will remain in effect 
as Class E airspace. For part–time Class D surface 
areas that change to Class G airspace, the arrival 
extensions will become Class G at the same time. 

e.  Separation for VFR Aircraft. 

No separation 

services are provided to VFR aircraft. 

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6.  Class E Airspace 

a.  Definition. 

Class E airspace is controlled 

airspace that is designated to serve a variety of 
terminal or en route purposes as described in this 
paragraph. 

b.  Operating Rules and Pilot/Equipment 

Requirements: 

1.  Pilot Certification. 

No specific certifica-

tion required. 

2.  Equipment. 

Unless otherwise authorized 

by ATC: 

(a) 

An operable radar beacon transponder 

with automatic altitude reporting capability and 
operable ADS

B Out equipment are required at and 

above 10,000 feet MSL within the 48 contiguous 
states and the District of Columbia, excluding the 
airspace at and below 2,500 feet above the surface, 
and 

(b) 

Operable ADS

B Out equipment at and 

above 3,000 feet MSL over the Gulf of Mexico from 
the coastline of the United States out to 12 nautical 
miles. 

NOTE

 

The airspace described in (b) is specified in 14 CFR § 
91.225 for ADS

B Out requirements. However, 14 CFR § 

91.215 does not include this airspace for transponder 
requirements. 

3.  Arrival or Through Flight Entry Require-

ments. 

No specific requirements. 

c.  Charts. 

Class E airspace below 14,500 feet 

MSL is charted on Sectional, Terminal, and IFR 
Enroute Low Altitude charts. 

d.  Vertical limits. 

Except where designated at a 

lower altitude (see paragraph 3

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6e, below, for 

specifics), Class E airspace in the United States 
consists of: 

1. 

The airspace extending upward from 14,500 

feet MSL to, but not including, 18,000 feet MSL 
overlying the 48 contiguous states, the District of 
Columbia and Alaska, including the waters within 
nautical 12 miles from the coast of the 48 contiguous 
states and Alaska; excluding: 

(a) 

The Alaska peninsula west of longit-

ude 160

00

'

00

''

W.; and 

(b)

 The airspace below 1,500 feet above the 

surface of the earth unless specifically designated 
lower (for example, in mountainous terrain higher 
than 13,000 feet MSL). 

2. 

The airspace above FL 600 is Class E 

airspace. 

e.  Functions of Class E Airspace. 

Class E 

airspace may be designated for the following 
purposes: 

Controlled Airspace 

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