AIP ENR 1.3-1
United States of America 15 MAR 07
Federal Aviation Administration Nineteenth Edition
ENR 1.3 Instrument Flight Rules
See ENR 1.1, ENR 1.4, and ENR 1.10.
AIP ENR 1.4-1
United States of America 15 MAR 07
Federal Aviation Administration Nineteenth Edition
ENR 1.4 ATS Airspace Classification
1. General
1.1 There are two categories of airspace or airspace
areas:
1.1.1 Regulatory (Class A, B, C, D, and E airspace
areas, restricted and prohibited areas).
1.1.2 Nonregulatory (military operations areas
(MOAs), warning areas, alert areas, and controlled
firing areas).
NOTEAdditional
information on special use airspace (prohibited
areas, restricted areas, warning areas, MOAs, alert areas,
and controlled firing areas) may be found in
SectionENR 5.1, Prohibited, Restricted and Other Areas,
paragraph 1 and Section ENR 5.2, Military Exercise and
Training Areas, paragraphs 1 through 3.
1.2 Within these two categories, there are four types:
1.2.1 Controlled.
1.2.2 Uncontrolled.
1.2.3 Special use.
1.2.4 Other airspace.
1.3 The categories and types of airspace are dictated
by:
1.3.1 The complexity or density of aircraft
movements.
1.3.2 The nature of the operations conducted within
the airspace.
1.3.3 The level of safety required.
1.3.4 The national and public interest.
1.4 It is important that pilots be familiar with the
operational requirements for each of the various types
or classes of airspace. Subsequent sections will cover
each class in sufficient detail to facilitate
understanding.
1.5 General Dimensions of Airspace Segments
1.5.1 Refer to Title 14 of the U.S. Code of Federal
Regulations (14 CFR) for specific dimensions,
exceptions, geographical areas covered, exclusions,
specific transponder or equipment requirements, and
flight operations.
REFERENCESee
GEN 1.7, Annex 2, for U.S. Differences From ICAO Standards,
Recommended Practices and Procedures.
1.6 Hierarchy of Overlapping Airspace
Designations
1.6.1 When overlapping airspace designations apply
to the same airspace, the operating rules associated
with the more restrictive airspace designation apply.
1.6.2 For the purpose of clarification:
1.6.2.1 Class A airspace is more restrictive than
ClassB, Class C, Class D, Class E, or Class G
airspace.
1.6.2.2 Class B airspace is more restrictive than
ClassC, Class D, Class E, or Class G airspace.
1.6.2.3 Class C airspace is more restrictive than
ClassD, Class E, or Class G airspace.
1.6.2.4 Class D airspace is more restrictive than
ClassE or Class G airspace.
1.6.2.5 Class E is more restrictive than Class G
airspace.
1.7 Basic VFR Weather Minimums
1.7.1 No person may operate an aircraft under basic
VFR when the flight visibility is less, or at a distance
from clouds that is less, than that prescribed for the
corresponding altitude and class of airspace. (See
TBL ENR 1.4-1.)
NOTEStudent
pilots must comply with 14 CFR Section61.89(A)
(6) and (7).
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