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or more routes carries the numbers of all the airways
which coincide for that segment. When such is the
case, pilots filing a flight plan need to indicate only
that airway number for the route filed.
NOTE−
A pilot who intends to make an airway flight, using VOR
facilities, will simply specify the appropriate victor"
airway(s) in the flight plan. For example, if a flight is to be
made from Chicago to New Orleans at 8,000 feet, using
omniranges only, the route may be indicated as departing
from Chicago−Midway, cruising 8,000 feet via Victor 9 to
Moisant International." If flight is to be conducted in part
by means of L/MF navigation aids and in part on
omniranges, specifications of the appropriate airways in
the flight plan will indicate which types of facilities will be
used along the described routes, and, for IFR flight, permit
ATC to issue a traffic clearance accordingly. A route may
also be described by specifying the station over which the
flight will pass but in this case since many VORs and L/MF
aids have the same name, the pilot must be careful to
indicate which aid will be used at a particular location.
This will be indicated in the route of flight portion of the
flight plan by specifying the type of facility to be used after
the location name in the following manner: Newark L/MF,
Allentown VOR.
2.4With respect to position reporting, reporting
points are designed for VOR Airway Systems.
Flights using Victor airways will report over these
points unless advised otherwise by ATC.
2.5The L/MF airways (colored airways) are
predicated solely on L/MF navigation aids and are
depicted in brown on aeronautical charts and are
identified by color name and number; e.g., Amber
One. Green and Red airways are plotted east and
west. Amber and Blue airways are plotted north and
south.
NOTE−
Except for G13 in North Carolina, the colored airway
system exists only in the state of Alaska. All other such
airways formerly so designated in the conterminous U.S.
have been rescinded.
CAUTION−
Use of adjacently located LF/VHF airways and routes −
many locations just outside the contiguous 48 states have
two separate airway structures. One structure is made up
from VORs and the other from L/MF NAVAIDs
(nondirectional radio beacons). In some instances, the
different routes appear to overlie each other. The
NAVAIDs are sometimes depicted so close to each other
that they will have the appearance of being collocated, or
nearly so. Substituting a VOR radial for a nondirectional
radio beacon bearing could, in many circumstances,
cause an excessive off course" navigational error. Strict
adherence to the color coding of the route structure and
NAVAID in use should be maintained. Chart procedures
provide an excellent means of route differentiation
through the use of color which is defined and explained
in the legend.
2.6The use of TSO−C145a or TSO−C146a
GPS/WAAS navigation systems is allowed in Alaska
as the only means of navigation on published air
traffic routes including those Victor and colored
airway segments designated with a second minimum
en route altitude (MEA) depicted in blue and
followed by the letter G at those lower altitudes. The
altitudes so depicted are below the minimum
ENR 3.5−2 AIP
15 MAR 07 United States of America
Nineteenth Edition Federal Aviation Administration
reception altitude (MRA) of the land−based
navigation facility defining the route segment, and
guarantee standard en route obstacle clearance and
two−way communications. Air carrier operators
requiring operations specifications are authorized to
conduct operations on those routes in accordance
with FAA operations specifications.
3. Jet Route System
3.1The jet route system consists of jet routes
established from 18,000 feet MSL to FL 450
inclusive.
3.2These routes are depicted on En Route High
Altitude Charts. Jet routes are depicted in black on
aeronautical charts and are identified by a J" (Jet)
followed by the airway number; e.g., J12. Jet routes,
as VOR airways, are predicated solely on VOR or
VORTAC navigation facilities (except in Alaska).
NOTE−
Segments of jet routes in Alaska are based on L/MF
navigation aids and are charted in brown color instead of
black on en route charts.
3.3With respect to position reporting, reporting
points are designated for Jet Route Systems. Flights
using jet routes will report over these points unless
otherwise advised by ATC.
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