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There are specific requirements, however, that must be
met before using RNAV procedures. Every RNAV departure chart lists general notes and may include specific
equipment and performance requirements, as well as the
type of RNAV departure procedure in the chart plan view.
New aircraft equipment suffix codes are used to denote
capabilities for advanced RNAV navigation, for flight
plan filing purposes. [Figure 2-31 on page 2-33]
The chart notes may also include operational information
for certain types of equipment, systems, and performance
requirements, in addition to the type of RNAV departure
procedure. DME/DME navigation system updating may
require specific DME facilities to meet performance stan-
dards. Based on DME availability evaluations at the time
of publication, current DME coverage is not sufficient to
support DME/DME RNAV operations everywhere without IRU augmentation or use of GPS. [Figure 2-32 on
page 2-33]
PILOT RESPONSIBILITY
FOR USE OF RNAV DEPARTURES
RNAV usage brings with it multitudes of complications
as it is being implemented. It takes time to transition, to
disseminate information, and to educate current and
potential users. As a current pilot using the NAS, you need
to have a clear understanding of the aircraft equipment
requirements for operating in a given RNP environment.
You must understand the type of navigation system
installed in your aircraft, and furthermore, you must know
how your system operates to ensure that you can comply
with all RNAV requirements. Operational information
should be included in your AFM or its supplements.
Additional information concerning how to use your
A fly-over (FO) waypoint precludes any
turn until the waypoint
is overflown.
A fly-by (FB) waypoint requires the
use of turn anticipation to avoid
overshooting the next segment.
Figure 2-28. Fly-Over and Fly-By Waypoints.
2-31
Figure 2-29. The COWBY TWO Departure, Las Vegas, Nevada, is an Example of an RNAV SID.
2-32
Figure 2-30. MENDOCINO ONE Departure, Willits, California, is an Example of an RNAV ODP.
2-33
RNAV Equipment Codes
ADVANCED RNAV WITH TRANSPONDER AND MODE C (If an aircraft is unable to operate with a transponder and/or
Mode C, it will revert to the appropriate code listed above under Area Navigation.)
/E FMS with DME/DME and IRU position updating
/F FMS with DME/DME position updating
/G Global Navigation Satellite System (GNSS), including GPS or WAAS, with en route and terminal capability.
/R RNP. The aircraft meets the RNP type prescribed for the route segment(s), route(s) and/or area concerned.
Reduced Vertical Separation Minimum (RVSM). Prior to conducting RVSM operations within the U.S., the operator
must obtain authorization from the FAA or from the responsible authority, as appropriate.
/J /E with RVSM
/K /F with RVSM
/L /G with RVSM
/Q /R with RVSM
/W RVSM
Figure 2-31. RNAV Equipment Codes.
Figure 2-32. Operational Requirements for RNAV.
2-34
equipment to its fullest capacity, including “how to” training may be gathered from your avionics manufacturer. If
you are in doubt about the operation of your avionics system and its ability to comply with RNAV requirements,
contact the FAA directly through your local Flight
Standards District Office (FSDO). In-depth information
regarding navigation databases is included in Appendix
A—Airborne Navigation Databases.
RADAR DEPARTURE
A radar departure is another option for departing an
airport on an IFR flight. You might receive a radar
departure if the airport does not have an established
departure procedure, if you are unable to comply with
a departure procedure, or if you request “No SIDs” as a
part of your flight plan. Expect ATC to issue an initial
departure heading if you are being radar vectored after
takeoff, however, do not expect to be given a purpose for
the specific vector heading. Rest assured that the controller knows your flight route and will vector you into
position. By nature of the departure type, once you are
issued your clearance, the responsibility for coordination
of your flight rests with ATC, including the tower controller and, after handoff, the departure controller who
will remain with you until you are released on course and
allowed to “resume own navigation.”
For all practical purposes, a radar departure is the easiest
type of departure to use. It is also a good alternative to a
published departure procedure, particularly when none of
the available departure procedures are conducive to your
flight route. However, it is advisable to always maintain a
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