Garmin Performance-Based

Navigation Capabilities

190-02223-00 March, 2020 Revision 5

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Telephone: 913-397-8200
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Telephone: +44 (0) 3708501243

RECORD OF REVISIONS
Revision
Revision Description
Date
1 1/31/17 Initial Release
2 4/24/17 Added B-RNAV and P-RNAV
3 10/6/17 Changed all AMC 20-27 references to AMC 20-27A
4 10/21/19 Added the GPS 175, GNC 355, and GNX 375
5 3/17/20 Added the GTN Xi Series

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1 INTRODUCTION
The purpose of this document is to provide background information on Performance-Based Navigation
(PBN) and reference tables on the related capabilities of Garmin systems. Garmin can provide an example
AFM(S) document that includes equipment approvals and navigation system limitations on request.
Section 2 gives a brief background on the PBN concept. This includes definition of terms and information
needed to understand the basic differences and uses of the various navigation specifications within PBN.
More detailed information can be found in the ICAO PBN Manual (ICAO 9613, Performance-based
Navigation (PBN) Manual).
Section 3 provides tables that describe the equipment capabilities of fielded Garmin systems. Each RNAV
(Area Navigation) and RNP (Required Navigation Performance) navigation specification and each
Advanced-RNP (A-RNP) function are listed with an indication whether they are supported by the Garmin
system’s equipment and software.
Section 4 provides a list of acronyms used throughout the document with definitions.

NOTE
The terms RNAV and RNP have had several historical uses but as used in this document,
RNAV and RNP are as defined in the ICAO PBN Manual (4th Edition) and as used in
RTCA DO-283B, Minimum Operational Performance Standards for Required Navigation
Performance for Area Navigation.

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2 PBN BACKGROUND
The Performance-Based Navigation (PBN) concept describes the standards and performance
requirements for navigation equipment along an ATS route, instrument procedure, or in a defined airspace.
These standards determine the basis for designing flight plan trajectories and the aircraft’s capabilities
determine if it can meet the performance requirements (in terms of accuracy, integrity, continuity,
availability, and functionality) to safely fly the operations. PBN consists of both RNAV and RNP
specifications.1

1. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume I, Explanation of Terms

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2.1 RNAV Specifications
The Area Navigation (RNAV) specifications allow flight along custom flight paths, as opposed to being
limited to airways, and utilize navigation sensors other than just traditional NAVAIDs. These
specifications are designated with the prefix RNAV: RNAV 10, RNAV 5, RNAV 2, and RNAV 1.
RNAV 10: Designated and authorized as RNP 10, this specification supports the 50 NM lateral and the 50
NM longitudinal distance-based separation minima in oceanic or remote area airspace. RNAV 10 does
not require on-board performance monitoring and alerting, but the designation of the airworthiness and
operational approval as well as airspace/route designation remains RNP 10 in order to retain the
validity of existing publications and approvals. For operations in airspace or on routes designated as
RNP 10, both the lateral total system error and the along-track error must each be within ±10 NM for
at least 95 percent of the total flight time.2
RNAV 5: This specification supports the en-route phase of flight in airspace where 5 NM lateral accuracy
is required. For operations in airspace or on routes designated as RNAV 5, both the lateral total system
error and the along-track error must each be within ±5 NM for at least 95 percent of the total flight
time.3
In this document, the Basic Area Navigation (B-RNAV) specification is termed the RNAV 5
specification. RNAV 5 is sufficient to allow navigation in European airspace designated for
B-RNAV.4
RNAV 2: This specification is applicable to all ATS routes, including the en-route phase of flight as well
as SID and STAR procedures and IAPs up to the FAF. They support operation in airspace where 2 NM
lateral accuracy is required. For operations in airspace or on routes designated as RNAV 2, both the
lateral total system error and the along-track error must each be within ±2 NM for at least
95 percent of the total flight time.5
RNAV 1: This specification is applicable to all ATS routes, including the en-route phase of flight as well
as SID and STAR procedures and IAPs up to the FAF. They support operation in airspace where 1 NM
lateral accuracy is required. For operations in airspace or on routes designated as RNAV 1, both the
lateral total system error and the along-track error must each be within ±1 NM for at least
95 percent of the total flight time.6
In this document, the Precision Area Navigation (P-RNAV) specification is termed the RNAV 1
specification. RNAV 1 is sufficient to allow navigation in European airspace designated for P-RNAV.7

2. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part B, Chapter 1
3. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part B, Chapter 2
4. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part B, Chapter 2 and FAA AC 90-96A
CHG 1.
5. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part B, Chapter 3
6. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part B, Chapter 3
7. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part B, Chapter 3, FAA AC 90-96A
CHG 1, and FAA AC 90-100A CHG 2.

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2.2 RNP Specifications
The Required Navigation Performance (RNP) specifications are similar to the RNAV specifications
with the addition of onboard navigation performance monitoring and alerting. These specifications are
designated with the prefix RNP: RNP 4, RNP 2, RNP 1, A-RNP, RNP APCH, RNP AR APCH, or
RNP 0.3.
RNP 4: This specification supports 30 NM lateral and 30 NM longitudinal distance-based separation
minima in oceanic or remote airspace. For operations in airspace or on routes designated as RNP 4,
both the lateral total system error and the along-track error must each be within ±4 NM for at least
95 percent of the total flight time.8
RNP 2: This specification supports en-route airspace navigation, including continental and oceanic/
remote applications. For operations in airspace or on routes designated as RNP 2, both the lateral total
system error and the along-track error must each be within ±2 NM for at least 95 percent of the total
flight time.9
RNP 1: This specification supports developing routes for connectivity between the en-route structure and
terminal airspace. The specification can be applied to SID and STAR procedures and IAPs up to the
FAF. For operations in airspace or on routes designated as RNP 1, both the lateral total system error
and the along-track error must each be within ±1 NM for at least 95 percent of the total flight time.10
RNP 0.3: Per ICAO 9613 and AC 90-105A, the RNP 0.3 specification applies mainly to rotorcraft
operations. This specification supports applications across all phases of flight, including operations to
and from heliports, in remote mountainous areas, or in high traffic density airspace. For operations in
airspace or on routes designated as RNP 0.3, both the lateral total system error and the along-track
error must each be within ±0.3 NM for at least 95 percent of the total flight time.11
RNP APCH (RNP Approach): This specification supports GNSS approach applications down to the
approach minima. RNP APCH applies only to approaches with straight final approach segments.
During RNP APCH operations, the 95 percent lateral accuracy requirements for both the lateral total
system error and the along-track error are:12
• ±1 NM for operations in the initial and intermediate segments and for the missed approach.
• ±0.3 NM for operations on the final approach segment down to the LNAV or LNAV/VNAV
approach minima.
• Based on the horizontal alert limit (HAL) extracted from the final approach segment data block
(FASDB) on the final approach segment down to the LPV or LP approach minima.

8. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part C, Chapter 1
9. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part C, Chapter 2
10. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part C, Chapter 3
11. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part C, Chapter 7
12. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part C, Chapter 5

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RNP AR APCH (RNP Authorization Required Approach): This specification supports approaches to
airports where limiting obstacles exist and/or where significant operational efficiencies can be gained
and includes advanced functional elements. Aircrews are required to have additional training and
authorization to fly an RNP AR APCH procedure. For aircraft operating on RNP AR APCH procedures,
both lateral total system error and the along-track error must each be within the applicable accuracy for
at least 95 percent of the total flight time: 13
• ±0.1 NM to ±1.0 NM for the initial, intermediate, and missed approach segments.
• ±0.1 NM to ±0.3 NM for the final approach segment.
A-RNP (Advanced RNP): This specification builds upon other specifications with the addition of
advanced functional elements such as radius-to-fix legs and scalable RNP. A-RNP can be applied to
oceanic/remote, en-route, terminal area (SIDs and STARs), and approach operations. A system qualified
and approved for A-RNP is considered to have met the requirements of RNAV 5, RNAV 1, RNAV 2,
RNP 2, RNP 1, and RNP APCH in full. For operations in airspace or on routes designated as A-RNP,
both the lateral total system error and the along-track error must each be within the applicable accuracy
(±0.3 NM to ±2.0 NM) for at least 95 percent of the total flight time.14

13. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part C, Chapter 6
14. Derived from ICAO 9613, Performance-based Navigation (PBN) Manual (4th Edition). Volume II, Part C, Chapter 4

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3 EQUIPMENT CAPABILITIES
3.1 RNAV Specifications

Table 1 RNAV Specifications

RNAV 10 RNAV 5 RNAV 1
Specification RNAV 2
[RNP 10] (1) B-RNAV (Europe) P-RNAV (Europe)
FAA AC 90-96A
FAA AC 90-105A, FAA AC 90-96A FAA AC 90-100A CHG 1,
Reference
FAA AC 91-70B, CHG 1, CHG 2, FAA AC 90-100A
Document
EASA AMC 20-12 EASA AMC 20-4A JAA TGL 10 CHG 2,
JAA TGL 10
ICAO Flight Plan
A1 B2 C2 D2
Code

En-route,
En-route,
Airspace Oceanic/Remote En-route Terminal,
Terminal
Approach (2)

Integrated Flight Decks

G5000
G3000 Yes Yes Yes Yes
G2000
G1000 NXi Yes Yes Yes Yes
G1000 w/SBAS Yes Yes Yes Yes
G1000 w/o SBAS Yes Yes Yes Yes
Panel Mount

GTN Series Yes Yes Yes Yes

GTN Xi Series Yes Yes Yes Yes

GPS 175
GNC 355 Yes Yes Yes Yes
GNX 375

GNS 400W/500W
Yes Yes Yes Yes
Series w/ SBAS

GNS 480 Yes Yes Yes Yes

Legacy GNS 400/500
Series Yes Yes Yes Yes
w/o SBAS

GPS 155/155XL No Yes No No

GPS 165 No Yes No No

GNC 300/300XL No Yes No No
(1) Higher continuity requirements from the Advanced RNP Functions table apply.

(2) Specification is applicable to approach procedures up to the FAF.

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3.2 RNP En-route/Terminal Specifications

Table 2 RNP En-route/Terminal Specifications

RNP 0.3
Specification RNP 4 (1) RNP 2 (2) RNP 1 (Rotorcraft only)
(4)
Reference FAA AC 90-105A FAA AC 90-105A
FAA AC 90-105A FAA AC 90-105A
Document FAA AC 91-70B FAA AC 91-70B
ICAO Flight Plan None at time of None at time of
L1 O2
Code publication publication
En-route, En-route,
Oceanic/Remote,
Airspace Oceanic/Remote Terminal, Terminal,
En-route
Approach (3) Approach
Integrated Flight Decks
G5000
G3000 Yes Yes Yes Yes
G2000
G1000 NXi Yes Yes Yes Yes
G1000 w/SBAS Yes Yes Yes Yes
G1000 w/o SBAS Yes Yes Yes No
Panel Mount
GTN Series Yes Yes Yes Yes
GTN Xi Series Yes Yes Yes Yes
GPS 175
GNC 355 Yes Yes Yes Yes
GNX 375
GNS 400W/500W
Yes Yes Yes Yes
Series w/ SBAS
GNS 480 Yes Yes Yes Yes
Legacy GNS 400/
500 Series Yes Yes Yes No
w/o SBAS
GPS 155/155XL No No No No
GPS 165 No No No No
GNC 300/300XL No No No No
(1) Higher continuity requirements from the Advanced RNP Functions table apply.
(2) Higher continuity requirements from the Advanced RNP Functions table apply in oceanic/remote airspace.
(3) Specification is applicable to approach procedures up to the FAF.
(4) For software/equipment not supporting Advanced RNP Scalable RNP capability, pilot must manually select 0.3 CDI scale.

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3.3 RNP Approach Specifications

Table 3 RNP Approach Specifications

RNP APCH
Specification RNP APCH LNAV RNP APCH LP RNP APCH LPV RNP AR APCH (2)
LNAV/VNAV (1)
FAA AC 90-105A, FAA AC 90-105A, FAA AC 90-107, FAA AC 90-101A CHG 1,
Reference Document FAA AC 90-107
EASA AMC 20-27A EASA AMC 20-27A EASA AMC 20-28 EASA AMC 20-26
None at time of None at time of T1 (with RF)
ICAO Flight Plan Code S1 S2
publication publication T2 (without RF)
Integrated Flight Decks
G5000
G3000 Yes Yes (2) Yes Yes Yes (7)*

G2000
G1000 NXi Yes Yes (2) Yes Yes No

G1000 w/SBAS Yes Yes (3) Yes (4) Yes No

G1000 w/o SBAS Yes No No No No

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 Table 3 RNP Approach Specifications
RNP APCH
Specification RNP APCH LNAV RNP APCH LP RNP APCH LPV RNP AR APCH (2)
LNAV/VNAV (1)
FAA AC 90-105A, FAA AC 90-105A, FAA AC 90-107, FAA AC 90-101A CHG 1,
Reference Document FAA AC 90-107
EASA AMC 20-27A EASA AMC 20-27A EASA AMC 20-28 EASA AMC 20-26
Panel Mount
GTN Series Yes Yes Yes Yes No

GTN Xi Series Yes Yes Yes Yes No

GPS 175/GNC 355/GNX 375 Yes Yes Yes Yes No

GNS 400W/500W Series w/ SBAS Yes Yes Yes (5) Yes No

GNS 480 Yes Yes Yes (6) Yes No

Legacy GNS 400/500 Series w/o SBAS Yes No No No No

GPS 155/155XL Yes No No No No

GPS 165 Yes No No No No

GNC 300/300XL Yes No No No No

*Contact Garmin program manager.

(1) Unless otherwise noted, vertical guidance supported only via Satellite-Based Augmentation System (SBAS) vertical position source.

(2) Vertical guidance supported via SBAS or barometric vertical position sources.*

(3) Vertical guidance supported via SBAS or barometric vertical position sources when GDU software v13.00 or later installed.*

(4) When GDU software v13.00 or later is installed.

(5) When main processor software v3.30 or later is installed.

(6) When main processor software v2.3 or later is installed.

(7) When GDU software v6.50 or later is installed.

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3.4 Advanced RNP Functions

Table 4 Advanced RNP Functions

Fixed Radius
RNAV Parallel Higher Scalable Time of Arrival
Function RF Legs Transitions
Holding Offsets Continuity RNP Control (TOAC)
(FRT)
Reference FAA AC 90-105A,
Document FAA AC 20-138D
Integrated Flight Decks
G5000
With dual GNSS When GDU When GDU
When GDU software v3.00
G3000 Yes Yes (GPS/SBAS) software v4.00 or software v4.00 or No
or later is installed *
receivers (2) later is installed (4) * later is installed
G2000
With dual GNSS
G1000 NXi Yes Yes* Yes (GPS/SBAS) No (5) Yes No
receivers (2)
With dual GNSS When GDU
G1000 When GDU software v13.00
Yes Yes (GPS/SBAS) No (5) software v13.00 or No
w/SBAS or later is installed *
receivers (2) later is installed
When GDU
G1000 When GDU software v13.00 With dual GNSS
Yes Yes No (5) software v13.00 or No
w/o SBAS or later is installed * (GPS) receivers (3)
later is installed
Panel Mount
With dual GNSS
When GTN software v6.01 or
GTN Series Yes Yes (GPS/SBAS) No (5) No No
later is installed (1)
receivers (2)
With dual GNSS
GTN Xi
Yes Yes (1) Yes (GPS/SBAS) No (5) No No
Series
receivers (2)
GPS 175 With dual GNSS
GNC 355 Yes Yes (1) Yes (GPS/SBAS) No (5) No No
GNX 375 receivers (2)

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 Table 4 Advanced RNP Functions

Fixed Radius
RNAV Parallel Higher Scalable Time of Arrival
Function RF Legs Transitions
Holding Offsets Continuity RNP Control (TOAC)
(FRT)
GNS 400W/ With dual GNSS
500W Series Yes No Yes (GPS/SBAS) No (5) No No
w/ SBAS receivers (2)
With dual GNSS
GNS 480 Yes No Yes (GPS/SBAS) No (5) No No
receivers (2)
With dual GNSS
Legacy GNS
(GPS) receivers
400/500
Yes No No when main and GPS No (5) No No
Series
software v3.00 or
w/o SBAS
later is installed (3)
GPS 155/
155XL
GPS 165 No No No No No (5) No No
GNC 300/
300XL
*Contact Garmin program manager.
(1) See Install Manual for information on qualified installations.
(2) Supported when both GPS/SBAS receivers are operating and providing GPS navigation guidance to the display.
(3) Supported when both GPS receivers are operating and providing GPS navigation guidance to the display.
(4) RNP airways are supported with software v20.50 or later installed.
(5) Applies only to automatic selection. RNP level may be manually selected as the CDI scale.

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4 ACRONYMS
The following acronyms are used within this document:
AFM: Aircraft Flight Manual
AFMS: Aircraft Flight Manual Supplement
ATS: Air Traffic Service
B-RNAV: Basic Area Navigation
CDI: Course Deviation Indicator
EASA: European Aviation Safety Agency
FAA: Federal Aviation Administration
FAF: Final Approach Fix
FASDB: Final Approach Segment Data Block
FRT: Fixed Radius Turn
GDU: Garmin Display Unit
GNC: Garmin Nav/Comm
GNS: Garmin Navigation System
GNSS: Global Navigation Satellite System
GNX: Garmin Navigator-Transponder
GPS: Global Positioning System
GTN: Garmin Touchscreen Navigator
HAL: Horizontal Alert Limit
IAP: Instrument Approach Procedure
ICAO: International Civil Aviation Organization
LNAV: Lateral Navigation
LNAV/VNAV: Lateral/Vertical Navigation
LP: Localizer Performance
LPV: Localizer Performance with Vertical Guidance
NAVAID: Navigation Aid
NM: Nautical Mile
PBN: Performance Based Navigation
P-RNAV: Precision Area Navigation
RF: Radius to Fix
RNAV: Area Navigation
RNP: Required Navigation Performance
RTCA: RTCA, Inc., formerly Radio Technical Commission for Aeronautics
SBAS: Satellite Based Augmentation System
SID: Standard Instrument Departure
STAR: Standard Terminal Arrival Route
TOAC: Time of Arrival Control

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