2/14/08 AIM
National Security and Interception Procedures 5-6-1
Section 6. National Security and Interception Procedures
5-6-1. National Security
a. National security in the control of air traffic is
governed by 14 CFR Part 99.
b. All aircraft entering domestic U.S. airspace
from points outside must provide for identification
prior to entry. To facilitate early aircraft identification
of all aircraft in the vicinity of U.S. and international
airspace boundaries, Air Defense Identification
Zones (ADIZ) have been established.
REFERENCEAIM,
ADIZ Boundaries and Designated Mountainous Areas,
Paragraph 5-6-5.
c. Operational requirements for aircraft operations
associated with an ADIZ are as follows:
1. Flight Plan. Except as specified in subparagraphs
d and e below, an IFR or DVFR flight plan
must be filed with an appropriate aeronautical facility
as follows:
(a) Generally, for all operations that enter an
ADIZ.
(b) For operations that will enter or exit the
U.S. and which will operate into, within or across the
Contiguous U.S. ADIZ regardless of true airspeed.
(c) The flight plan must be filed before
departure except for operations associated with the
Alaskan ADIZ when the airport of departure has no
facility for filing a flight plan, in which case the flight
plan may be filed immediately after takeoff or when
within range of the aeronautical facility.
2. Two‐way Radio. For the majority of operations
associated with an ADIZ, an operating two‐way
radio is required. See 14 CFR Section 99.1 for
exceptions.
3. Transponder Requirements. Unless otherwise
authorized by ATC, each aircraft conducting
operations into, within, or across the Contiguous U.S.
ADIZ must be equipped with an operable radar
beacon transponder having altitude reporting capability
(ModeC), and that transponder must be turned
on and set to reply on the appropriate code or as
assigned by ATC.
4. Position Reporting.
(a) For IFR flight. Normal IFR position
reporting.
(b) For DVFR flights. The estimated time
of ADIZ penetration must be filed with the
aeronautical facility at least 15 minutes prior to
penetration except for flight in the Alaskan ADIZ, in
which case report prior to penetration.
(c) For inbound aircraft of foreign registry.
The pilot must report to the aeronautical facility
at least one hour prior to ADIZ penetration.
5. Aircraft Position Tolerances.
(a) Over land, the tolerance is within plus or
minus five minutes from the estimated time over a
reporting point or point of penetration and within
10NM from the centerline of an intended track over
an estimated reporting point or penetration point.
(b) Over water, the tolerance is plus or minus
five minutes from the estimated time over a reporting
point or point of penetration and within 20 NM from
the centerline of the intended track over an estimated
reporting point or point of penetration (to include the
Aleutian Islands).
6. Land-Based ADIZ. Land-Based ADIZ are
activated and deactivated over U.S. metropolitan
areas as needed, with dimensions, activation dates
and other relevant information disseminated via
NOTAM.
(a) In addition to requirements outlined in
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