AIP ENR 5.1−1
United States of America 15 MAR 07
Federal Aviation Administration Nineteenth Edition
ENR 5. NAVIGATION WARNINGS
ENR 5.1 Prohibited, Restricted, and Other Areas
1. Special Use Airspace
1.1General
1.1.1Special use airspace consists of that airspace
wherein activities must be confined because of their
nature, or wherein limitations are imposed upon
aircraft operations that are not a part of those
activities, or both. Except for controlled firing areas,
special use airspace areas are depicted on aeronautical
charts.
1.1.2Prohibited and restricted areas are regulatory
special use airspace and are established in 14 CFR
Part73 through the rulemaking process.
1.1.3Warning areas, military operations areas
(MOAs), alert areas, and controlled firing areas
(CFAs) are nonregulatory special use airspace. See
Section ENR 5.2 for information on MOAs, alert
areas, and CFAs.
1.1.4Special use airspace descriptions (except
CFAs) are contained in FAA Order 7400.8, Special
Use Airspace.
1.1.5 Special use airspace (except CFAs) are charted
on IFR and visual charts and include the hours of
operation, altitudes, and the controlling agency.
1.2Prohibited Areas
1.2.1Prohibited areas contain airspace of defined
dimensions identified by an area on the surface of the
earth within which the flight of aircraft is prohibited.
Such areas are established for security or other
reasons associated with the national welfare. These
areas are published in the Federal Register and are
depicted on aeronautical charts.
1.3Restricted Areas
1.3.1Restricted areas contain airspace identified by
an area on the surface of the earth within which the
flight of aircraft, while not wholly prohibited, is
subject to restrictions. Activities within these areas
must be confined because of their nature or
limitations imposed upon aircraft operations that are
not a part of those activities or both. Restricted areas
denote the existence of unusual, often invisible,
hazards to aircraft such as artillery firing, aerial
gunnery, or guided missiles. Penetration of restricted
areas without authorization from the using or
controlling agency may be extremely hazardous to
the aircraft and its occupants. Restricted areas are
published in the Federal Register and constitute
14CFR Part 73.
1.3.2ATC facilities apply the following procedures
when aircraft are operating on an IFR clearance
(including those cleared by ATC to maintain
VFR−on−top) via a route which lies within joint−use
restricted airspace.
1.3.2.1If the restricted area is not active and has been
released to the controlling agency (FAA), the ATC
facility will allow the aircraft to operate in the
restricted airspace without issuing specific clearance
for it to do so.
1.3.2.2If the restricted area is active and has not been
released to the controlling agency (FAA), the ATC
facility will issue a clearance which will ensure the
aircraft avoids the restricted airspace unless it is on an
approved altitude reservation mission or has obtained
its own permission to operate in the airspace and so
informs the controlling facility.
NOTE−
The above apply only to joint−use restricted airspace and
not to prohibited and nonjoint−use airspace. For the latter
categories, the ATC facility will issue a clearance so the
aircraft will avoid the restricted airspace unless it is on an
approved altitude reservation mission or has obtained its
own permission to operate in the airspace and so informs
the controlling facility.
1.3.3Restricted airspace is depicted on the en route
chart appropriate for use at the altitude or flight level
being flown. For joint−use restricted areas, the name
of the controlling agency is shown on these charts.
For all prohibited areas and nonjoint−use restricted
areas, unless otherwise requested by the using
agency, the phrase NO A/G" is shown.
ENR 5.1−2 AIP
15 MAR 07 United States of America
Nineteenth Edition Federal Aviation Administration
1.4Warning Areas
1.4.1A warning area is airspace of defined
dimensions, extending from three nautical miles
outward from the coast of the U.S., that contains
activity that may be hazardous to nonparticipating
aircraft. The purpose of such warning areas is to warn
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