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either adds to, supersedes, or deletes information in the basic SR22
Pilot's Operating Handbook.
• Note •
This POH Supplement Revision dated Revision 2: 08-15-07
supersedes and replaces the Revision 1 of this supplement
dated 05-25-05.
Revision 2: 08-15-07
2 of 10 P/N 13772-103
Section 9 Cirrus Design
Supplements SR22
Figure - 1
Section 1 - General
The airplane is equipped with a Garmin GNS 430 GPS Navigator with
VHF Nav, ILS, and VHF Com herein referred to as the “Navigator.” The
GNS 430 is capable of providing IFR enroute, terminal, and approach
navigation with position accuracies better than 15 meters. The system
utilizes the Global Positioning System (GPS) satellite network to derive
the airplane’s position (latitude, longitude, and altitude) and the
altitude digitizer to enhance the altitude calculation.
The GARMIN GNS 430 GPS Navigator may be installed in single or
dual installations. If one GNS 430 is installed, it will be designated
GPS 1, and a GARMIN GNC 420 GPS Navigator will be installed as
GPS 2. Refer to applicable supplements for descriptions of these
units.
If two GARMIN GNS 430 Navigators are installed, the upper unit will
be designated GPS 1 and the lower unit will be designated GPS 2. In
these installations, the MFD and the HSI will display GPS 1
information and the CDI (VOR/LOC/ILS/GS Indicator) will display GPS
2 information.
• Note •
Refer to GPS 430 INTEGRATION in the NORMAL
PROCEDURES Section of this supplement for a more
detailed description of GPS 430 integration in the various
configurations.
SR22_FM09_1109
Garmin GNS 430 Front Panel
Revision 2: 08-15-07
P/N 13772-103 3 of 10
Cirrus Design Section 9
SR22 Supplements
Section 2 – Limitations
Provided the GPS Navigator is receiving adequate usable signals, it
has been demonstrated capable of and has been shown to meet the
accuracy specifications of:
1. VFR/IFR, enroute, terminal, and instrument approach (GPS, VOR)
operations, that is, enroute, terminal, and instrument approach
within the U.S. National Airspace System, North Atlantic Minimum
Navigation Performance Specification (MNPS) Airspace using the
WGS-84 (or NAD 83) coordinate reference datum in accordance
with the criteria of AC 20-138, AC 91-49, and AC 120-33.
Navigation data is based upon use of only the global positioning
system (GPS) operated by the United States.
2. The Garmin GNS 430 Pilot's Guide and Reference, P/N 190-
00140-00, Revision F dated July 2000 (or later appropriate
revision) must be immediately available to the flight crew
whenever navigation is predicated on the use of the GPS
Navigator. The software status stated in the pilot's guide must
match that displayed on the equipment.
3. The Navigator must utilize software version 2.XX (where X is a
digit, 0-9) or later.
4. IFR enroute and terminal navigation is prohibited unless the pilot
verifies the currency of the database or verifies each selected
waypoint for accuracy by reference to current approved data.
5. GPS instrument approaches must be accomplished in accordance
with approved instrument approach procedures that are retrieved
from the Navigator’s NavData database. The database must
incorporate the current update cycle.
a. Instrument approaches must be conducted in the approach
mode and RAIM must be available at the Final Approach Fix.
b. Accomplishment of ILS, LOC, LOC-BC, LDA, SDF, and MLS
approaches are not authorized in GPS mode.
c. When an alternate airport is required by the applicable
operating rules, it must be served by an approach based on
other than GPS navigation, the aircraft must have operational
equipment capable of using that navigation aid, and the
required navigation aid must be operational.
Revision 2: 08-15-07
4 of 10 P/N 13772-103
Section 9 Cirrus Design
Supplements SR22
6. The aircraft must have other approved navigation equipment
installed and operating appropriate to the route of flight.
7. The Garmin GNS 430 meets RNP5 (BRNAV) requirements of
AC 90-96 and is in accordance with AC 20-138, and JAA AMJ
20X2 Leaflet 2 Revision 1, provided it is receiving usable
navigation information from the GPS receiver.
8. Do not use the TERRAIN Interface for navigation of the aircraft.
The Terrain Display does not provide TAWS capability and is
intended to serve as a situational awareness tool only and does
not provide the accuracy fidelity on which to solely base terrain or
obstacle avoidance maneuvering decisions.
Section 3 - Emergency Procedures
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