Garmin GAD 42 Installation guide

ATR 42 190-01616-03 Rev. 2

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Garmin Ltd. or its subsidiaries

Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted,

disseminated, downloaded or stored in any storage medium, for any purpose without the express prior

written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual

and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and

to print one copy of this manual or of any revision hereto, provided that such electronic or printed copy of

this manual or revision must contain the complete text of this copyright notice and provided further that any

unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

Garmin International, Inc.

1200 E. 151

st

Street

Olathe, KS 66062 USA

Telephone: 913-397-8200

www.garmin.com

This Area Intentionally Blank

190-01616-03 Rev. 2 ATR 42

FAA APPROVED

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Garmin International, Inc

Log of Revisions

FAA Approved Airplane Flight Manual Supplement for

Dual Garmin GTN 725 Installation in ATR – GIE Avions de Transport Régional

ATR 42.

REV

NO.

PAGE NO(S) DESCRIPTION

DATE OF

APPROVAL

FAA APPROVED

1 ALL Original Issue 02/25/2016 02/25/2016

2 ALL Update to Main system software

version. Revised GPS equipment

approval. Revised GPS limitations.

Added Normal Procedures items.

See Cover See Cover

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Table of Contents

Section 1. General .................................................................................................... 7

USE OF THE SUPPLEMENT ................................................................................................................... 7

Garmin GTN 725 GNSS Navigation system Equipment approvals .................................................... 8

ABBREVIATIONS AND TERMINOLOGY .............................................................................................. 12

Section 2. Limitations ............................................................................................ 15

GTN 725 GNSS (GPS/SBAS) Navigation system Limitations ........................................................... 15

Section 3. Normal Procedures .............................................................................. 19

GTN 725 Unit Power Up and Database validation .............................................................................. 19

Glove Qualification Procedure ............................................................................................................. 19

Flight Director / Autopilot Normal Operating Procedures ................................................................. 20

EFIS Display Normal Procedures ........................................................................................................ 20

Section 4. Emergency Procedures ....................................................................... 27

Section 5. Procedures Following Failures ........................................................... 29

Loss of GPS/SBAS Navigation Data .................................................................................................... 29

GPS Approach Downgrade .................................................................................................................. 30

Heading Data Source Failure ............................................................................................................... 30

Pressure Altitude Data Source Failure ................................................................................................ 30

Section 6. Performances ....................................................................................... 31

Section 7. Appendices and Supplements ............................................................ 33

Section 8. System Description .............................................................................. 35

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Section 1. General

The information in this supplement is FAA-approved material and must be attached to the Pilot’s Operating

Handbook and FAA Approved Airplane Flight Manual (POH/AFM) when the airplane has been modified by

installation of the Garmin Dual GTN 725 system in accordance with Garmin International, Inc. approved

data.

The information in this supplement supersedes or adds to the basic POH/AFM only as set forth below.

Users of the manual are advised to always refer to the supplement for possibly superseding information

and placarding applicable to operation of the airplane.

USE OF THE SUPPLEMENT

The following definitions apply to WARNINGS, CAUTIONS and NOTES found throughout the supplement:

Operating procedures, techniques, etc., which may result in personal injury or loss of life if not

carefully followed.

CAUTION

Operating procedures, techniques, etc., which may result in damage to equipment if not

carefully followed.

NOTE

Operating procedures, techniques, etc., which is considered essential to emphasize.

WARNING

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Garmin GTN 725 GNSS Navigation system Equipment approvals

The long-range navigation system installed in this airplane consists of dual, independent GNSS long-range

navigation units with Satellite Based Augmentation System (SBAS). The system is comprised of two (2)

TSO-C146c / ETSO-C146 Class 3 GTN 725 navigation units, two (2) Garmin GA 36, antennas, GPS

software version 5.0 or later approved version in each GTN 725, and Main software 5.13 or later approved

version in each GTN 725.

The Garmin GTN 725 GNSS navigation systems as installed in this airplane complies with the requirements

of AC 20-138C and is approved for navigation using GPS and GPS/SBAS (within the coverage of a Satellite

Based Augmentation System signals complying with ICAO Annex 10) for IFR en-route, terminal area, and

non-precision approach.

The Garmin GTN 725 GNSS navigation system as installed in this airplane complies with the equipment,

performance, and functional requirements to conduct RNAV and RNP operations in accordance with the

following table:

Navigation

Specification

Operational

Requirements/

Authorization

Reference

Documents

ICAO Flight

Plan Code

Notes

Item 10a

Code

Item 18

PBN/

RNAV 10

RNP 10

Oceanic and

Remote

Areas of

Operation

(Class II

Navigation).

GNSS FDE

availability must be

verified prior to flight.

Maximum predicted

FDE unavailability is

34 minutes.

Two GNSS systems

required to be

operational, (one

GNSS system for

those routes requiring

only one long range

navigation system)

No time limit using

GNSS as the primary

navigation sensor.

This does not

constitute an

operational approval.

FAA AC:

91-70A,

FAA Order

8400.12C

EASA AMC

20-12

R

A1

The GPS equipment as

installed complies with the

requirements for GPS

primary means of Class II

navigation in oceanic and

remote airspace without

reliance on other long-

range navigation systems,

when used in conjunction

with the G1000 FDE

Prediction program, part

number 006-A0154-01

(010-G1000-00) or later

approved version.

B-RNAV /

RNAV 5

(Europe)

This does not

constitute an

operational approval.

FAA AC

90-96A

CHG 1,

EASA AMC

20-4A

R

B2

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Navigation

Specification

Operational

Requirements/

Authorization

Reference

Documents

ICAO Flight

Plan Code

Notes

Item 10a

Code

Item 18

PBN/

RNP 4

Oceanic and

Remote

Areas of

Operation

(Class II

Navigation).

GNSS FDE

availability must be

verified prior to flight.

Maximum predicted

FDE unavailability is

25 minutes.

Two operational

long-range nav

systems, (or one

navigation system

and one GNSS

sensor for those

routes requiring only

one long-range

navigation sensor).

No time limit using

GNSS as the primary

navigation sensor.

This does not

constitute an

operational approval.

FAA AC:

91-70A,

FAA Order

8400.33

R

L1

The GPS equipment as

installed complies with the

requirements for GPS

primary means of Class II

navigation in oceanic and

remote airspace without

reliance on other long-

range navigation systems,

when used in conjunction

with the G1000 FDE

Prediction program, part

number 006-A0154-01

(010-G1000-00) or later

approved version.

Additional equipment may

be required to obtain

operational approval to

utilize RNP-4 performance.

RNAV 2

The GNSS RNAV

system is installed

and meets the

performance and

functional

requirements of AC

90-100A.

In accordance with

AC 90-100A, CHG 2,

Part 91 operators

(except subpart K)

following the aircraft

and training guidance

in AC 90-100A are

authorized to fly

RNAV 2 procedures.

Part 91 subpart K,

121, 125, 129, and

135 operators require

operational approval.

FAA AC

90-100A

CHG 2

R

C2

Includes RNAV Q and T

routes.

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Navigation

Specification

Operational

Requirements/

Authorization

Reference

Documents

ICAO Flight

Plan Code

Notes

Item 10a

Code

Item 18

PBN/

RNAV 1

The GNSS RNAV

system is installed

and meets the

performance and

functional

requirements of AC

90-100A.

In accordance with

AC 90-100A, Part 91

operators (except

subpart K) following

the aircraft and

training guidance in

AC 90-100A are

authorized to fly

RNAV 1 procedures.

Part 91 subpart K,

121, 125, 129, and

135 operators require

operational approval.

FAA AC

90-100A

CHG 2

R

D2

Includes RNAV terminal

departure and arrival

procedures.

P-RNAV

(Europe)

This does not

constitute an

operational approval.

FAA AC

90-96A

CHG 1,

JAA TGL

10 Rev 1

R

D2

ICAO flight plan code for

P-RNAV no longer exist.

P-RNAV utilizes RNAV 1

flight plan codes.

RNP 1

In accordance with

AC 90-105, Part 91

operators (except

subpart K), following

the aircraft and

training guidance in

AC 90-105 are

authorized to fly

RNP 1 procedures.

Part 91 subpart K,

121, 125, 129, and

135 operators require

operational approval.

FAA AC

90-105

R

O2

Includes RNP terminal

departure and arrival

procedures.

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Navigation

Specification

Operational

Requirements/

Authorization

Reference

Documents

ICAO Flight

Plan Code

Notes

Item 10a

Code

Item 18

PBN/

RNP APCH

LNAV minima

In accordance with

AC 90-105, Part 91

operators (except

subpart K), following

the aircraft and

training guidance in

AC 90-105 are

authorized to fly RNP

APCH LNAV minima

procedures.

Part 91 subpart K,

121, 125, 129, and

135 operators require

operational approval.

FAA AC

90-105,

EASA AMC

20-27

R

S1

Includes non-precision

approaches based on

conventional navigation

aids with “or GPS” in the

title and area navigation

approaches titled “GPS”,

“RNAV (GPS)”, and

“RNAV (GNSS)”.

FDE/RAIM availability worldwide can be determined via the following:

• Using G1000 FDE Prediction program, part number 006-A0154-01 (010-G1000-00) or later

approved version with Garmin GA 36 antenna selected.

Also, within the United States:

• Via the FAA’s RAIM Service Availability Prediction Tool (SAPT) website: http://sapt.faa.gov.

• Contacting a Flight Service Station (not DUATS) to obtain non-precision approach RAIM.

Within Europe,

• Using the G1000 FDE Prediction program,

• Europe’s AUGER GPS RAIM Prediction Tool at http://augur.ecacnav.com/augur/app/home.

Determining FDE/RAIM availability is not necessary if SBAS coverage is confirmed to be available along

the entire route of flight. The route planning and FDE prediction program may be downloaded from the

Garmin G1000 website on the internet. For information on using the FDE Prediction Program, refer to

Garmin WAAS FDE Prediction Program, part number 190-00643-01, ‘FDE Prediction Program

Instructions’.

Navigation information is referenced to the WGS-84 reference system.

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ABBREVIATIONS AND TERMINOLOGY

The following glossary is applicable within the airplane flight manual supplement

AC Advisory Circular

ADF Automatic Direction Finder

AFCS Automatic Flight Control System

AFM Airplane Flight Manual

AFMS Airplane Flight Manual Supplement

AIRAC Aeronautical Information, Regulation, and Control

AMC Acceptable Means of Compliance

APCH Approach

AP Autopilot

APP Approach Phase

B-RNAV Basic Area Navigation

CDI Course Deviation Indicator

DME Distance Measuring Equipment

DR Dead Reckoning

DTRK Desired Track

DUATS FAA’s Direct User Access Terminal Service

EASA European Aviation Safety Agency

EFIS Electronic Flight Instrument System

EHSI Electronic Horizontal Situation Indicator

ETSO European Technical Standard Order

FAA Federal Aviation Administration

FDE Fixed Displacement Error

GA 36 Garmin Antenna Model 36

GNSS Global Navigation Satellite System

GPS Global Positioning System

GPSS Global Position Satellite System

GSPD Groundspeed

GTN Garmin Touchscreen Navigator

HDG AFCS heading mode

HSI Horizontal Situation Indicator

IAP Instrument Approach Procedure

ICAO International Civil Aviation Organization

IFR Instrument Flight Rules

ILS Instrument Landing System

JAA TGL Joint Aviation Authority Technical Guidance Letter

kt Knots

LDA Localizer-Type Directional Aid

LNAV Lateral Navigation

LNAV + V Lateral Navigation with Advisory Vertical Guidance

LNAV/VNAV Lateral Navigation / Vertical Navigation

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LOC Localizer

LOC-BC Localizer Back Course

LOI Loss of Integrity (GPS)

LP Localizer Performance

LPV Localizer Performance with Vertical Guidance

MLS Microwave Landing System

MNPS Minimum Navigation Performance Specification

MSG Message

NAT North Atlantic

NM Nautical Mile

P/N Part Number

pb Push Button

POH Pilot’s Operating Handbook

P-RNAV Precision Area Navigation

ODA Organization Designation Authorization

ODP Obstacle Departure Procedure

OFS Parallel Offset

RAIM Receiver autonomous integrity monitoring

RNAV Area Navigation

RNP Required Navigation Performance

RNV Area Navigation

SAPT Service Availability Prediction Tool

SBAS Satellite Based Augmentation System

SDF Simplified Directional Facility

SID Standard Instrument Departure

STAR Standard Terminal Arrival Route

STC Supplemental Type Certificate

SW Software

TCS Touch Control Steering

TSO Technical Standard Order

TGT Target

TTG Time To Go

V/L VOR / Localizer

VHF Very High Frequency

VNAV Vertical Navigation

VOR VHF Omni-directional Range

WGS-84

World Geodetic System 1984

WX Weather

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Section 2. Limitations

The Garmin GTN-725 Cockpit Reference Guide, part number 190-01007-04 Rev F (or later

approved revisions), must be immediately available to the flight crew.

The only approved sources of course guidance are on the external EHSI display. The moving map and CDI

depiction on the GTN display are for situational awareness only and are not approved for course guidance.

This AFMS is applicable to the software versions shown below:

Software Item Software Version (or later FAA Approved version for this STC)

Main SW Version 5.13

GPS Software Version 5.0

Do not use SafeTaxi or Chartview functions as the basis for ground maneuvering. SafeTaxi and Chartview

are only to be used by the flight crew to orient themselves on the airport surface to improve pilot situational

awareness during ground operations.

The Glove Qualification Procedure in the Normal Procedures section of this AFMS must be successfully

completed on the ground before a glove covering the pilot’s fingers can be used while operating the

GTN 725 in flight.

Do not conduct the Glove Qualification Procedure while in flight.

GTN 725 GNSS (GPS/SBAS) Navigation system Limitations

NOTE

Limitations are in bolded text for this section only.

1. The flight crew must confirm at system initialization the currency of the Navigation database

and the database is appropriate for the region of intended operation.

2. Navigation information is referenced to WGS-84 reference system, and should only be used

where the Aeronautical Information Publication (including electronic data and aeronautical

charts) conform to WGS-84 or equivalent.

3. If the AIRAC cycle will change during flight, the flight crew must ensure the accuracy of

navigation data, including suitability of navigation facilities used to define the routes and

procedures for flight. If an amended chart affecting navigation data is published for the

procedure, the database must not be used to conduct the procedure. The Navigation database

is expected to be current for the duration of the flight.

4. GPS/SBAS based IFR enroute, oceanic, and terminal navigation is prohibited unless the flight

crew verifies and uses a valid, compatible, and current Navigation database or verifies each

waypoint for accuracy by reference to current approved data.

5. Navigation procedures with known database discrepancies are prohibited from being flown

using data from the navigation database until a new navigation database is installed in the

aircraft and the discrepancy is verified to have been corrected.

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NOTE

Navigation database discrepancies can be reported at FlyGarmin.com then select “Aviation

Data Error Report”. Flight crew and operators can view Navigation data base alerts at

FlyGarmin.com then select “NavData Alerts”.

6. For flight planning purposes, IFR operations in areas where SBAS coverage is not available

along the entire route of flight, the flight crew must check FDE/RAIM availability.

7. For flight planning purposes, IFR operations within the U.S. National Airspace System on RNP

and RNAV procedures when SBAS signals are not available, the availability of GPS integrity

FDE/RAIM shall be confirmed for the intended route of flight. In the event of a predicted continuous

loss of RAIM of more than five minutes for any part of the intended route of flight, the flight should be

delayed, canceled, or re-routed on a track where FDE/RAIM requirements can be met. The flight may

also be re-planned using non-GNSS based navigational capabilities.

8. For flight planning purposes, for operations within European B-RNAV and P-RNAV airspace, if

more than one satellite is scheduled to be out of service, then the availability of GPS integrity

FDE/RAIM shall be confirmed for the intended flight (route and time). In the event of a predicted

continuous loss of FDE/RAIM of more than five minutes for any part of the intended flight, the flight

should be delayed, canceled, or re-routed on a track where FDE/RAIM requirements can be met.

9. For flight planning purposes, IFR operations where the route requires Class II navigation the

aircraft’s operator or flight crew must determine that FDE/RAIM will be available along the

intended route. Use the Garmin WFDE Prediction program to determine that there are no outages

on the specified route that would prevent the G1000 from providing primary means of Class II navigation

in oceanic and remote areas of operation that requires (RNP-10 or RNP-4) capability. If the Garmin

FDE Prediction program indicates fault exclusion (FDE/RAIM) is unavailable for more than 34 minutes

in accordance with FAA Order 8400.12C for RNP-10 requirements, or 25 minutes in accordance with

FAA Order 8400.33 for RNP-4 requirements, then the operation must be rescheduled when FDE/RAIM

is available.

10. Two GTN 725 units and two EHSI navigation displays must be operating and providing GPS

navigation guidance for operations in the following airspace:

• RNP-4 (except for operations where single long range navigation system is authorized)

• RNP-10 (except for operations in the Gulf of Mexico where single long range navigation

system RNP-10 is authorized)

• NAT MNPS (except routes requiring only one long range navigation system)

• Oceanic/Remoter Areas (Class II navigation) (except routes requiring only one long range

navigation system)

11. Manual entry of waypoints using latitude/longitude or place/bearing is prohibited for RNP and

RNAV routes. This includes Standard Instrument Departures (SIDs) and Obstacle Departure

Procedures (ODPs), Standard Terminal Arrival (STAR), and enroute (including RNAV “Q” and RNAV

“T” routes). Whenever possible, RNP and RNAV routes should be loaded into the flight plan from the

database in their entirety, rather than loading route waypoints from the database into the flight plan

individually. Selecting and inserting individual named fixes from the database is permitted for

procedures not contained in the navigation database. In such cases, route waypoints can be loaded

into the flight plan by selecting and inserting individual named fixes from the database provided all fixes

along the published route to be flown are inserted.

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12. Approach limitations utilizing GNSS for navigation:

• “GPS”, “or GPS”, or “RNAV (GPS)” instrument approaches are prohibited unless the flight

crew verifies and uses the current Navigation database.

• Flight crew planning on flying an RNAV instrument approach must ensure that the

Navigation database contains the planned RNAV Instrument Approach Procedure.

• “GPS”, “or GPS”, or “RNAV (GPS)” instrument approaches must be loaded into the flight

plan by the procedure name from the Navigation database. Pilots are prohibited from flying

any approach path that contains manually entered waypoints.

• When conducting instrument approaches referenced to true North, the NAV Angle on the

System - Units page must be set to True (T

o

).

• GPS based instrument approaches must be flown in accordance with an approved

instrument approach procedure that is loaded from the Navigation database.

• IFR non-precision approach approval using the GPS/SBAS sensor is limited to published

approaches within the U.S. National Airspace System. Approaches to airports in other

airspace are not approved unless authorized by the appropriate governing authority.

• Instrument approaches using GPS guidance may only be conducted when the GTN 725 is

operating in the approach mode. (LNAV)

• The GTN 725 as installed in this aircraft is NOT approved for RNAV (GPS) approach

procedures including “LP”, “LPV”, “LNAV/VNAV”, or “LNAV+V”.

• Use of the Garmin GTN 725 GPS/SBAS receivers to provide navigation guidance during the

final approach segment of an ILS, LOC, LOC-BC, LDA, SDF, MLS or any other type of

approach not approved for “or GPS” navigation is prohibited.

Note

The title of the procedure and notes on the IAP chart indicates the navigation equipment required

to join and fly an instrument approach procedure. GNSS navigation can be used as an alternate

means of navigation for the final approach segment of a VOR approach.

• For non-RNAV (GPS) approach operations, the existing navigation receivers must be tuned

to the appropriate approach and landing frequencies prior to establishing the aircraft on the

approach.

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Section 3. Normal Procedures

GTN 725 Unit Power Up and Database validation

During system initialization, test annunciations are displayed. All system annunciations should

disappear typically within the first 30 seconds after power-up. Upon power-up, key annunciator lights

also become momentarily illuminated on the GTN 725 display bezel.

The splash screen displays the following information:

• Copyright

• Database List and System version

• Instrument Panel Self-Test

Current database information includes valid operating dates, cycle number, and database type. When

this information has been reviewed for currency (to ensure that no databases have expired), the pilot is

prompted to continue. Databases that are not current will be shown in amber.

Glove Qualification Procedure

This procedure is used to qualify a specific pilot/glove for use with the GTN 725 unit by guiding the user

through a variety of tasks that use the touchscreen. Due to differences in finger size and glove size, the

qualification granted by this procedure is specific to the pilot/glove.

1. Sit in the pilot’s seat.

2. Start the GTN in Demo mode by pressing and holding the Direct To key during power up.

3. Perform the tasks listed in the following table with a non-gloved hand. You do not need to record

any results for this step.

4. Perform the tasks listed in the following table with a gloved hand. For each task, determine whether

the operation is the same or worse as it was without the glove. Make a copy of the following table

and record the results. Retain a copy of these results for future reference. Items that may cause

the operation to be worse include, but are not limited to:

a. Multiple attempts to select a key

b. Unintentional selection of adjacent keys

c. Excessive force on the touchscreen to select a key

5. If all applicable tasks in the following table respond in the same way with and without a glove then

the glove used to complete these tasks may be used by the pilot.

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Task Operation With Glove (circle one)

N

avigate to the Home Screen.

NA

Touch the Demo key Same Worse

Touch the GPS key Same Worse

Touch the Waypoint key Same Worse

Type “KSLE” using the touchscreen, then touch Enter. Same Worse

Navigate to the Home Screen (Press HOME). NA

Touch the Flight Plan key. Same Worse

Enter the following waypoints using the Add

Waypoint key at the bottom of the list of flight plan

waypoints:

KSLE

KMMV

KONP

BTG

Same Worse

Select BTG, then touch the Load Airway key to load

the following airway: V23 ALFOR.

Same Worse

While viewing the flight plan page, touch the Up/Down

arrow keys to scroll up and down to view the flight plan

waypoints.

Same Worse

Touch the Back key to return to the Home screen. Same Worse

Tests Required for Glove Qualification

Flight Director / Autopilot Normal Operating Procedures

The GTN 725 may be coupled to the flight director and autopilot as follows:

1. On the EFIS Control Panel, press the RNV button to display RNAV information on the

EHSI.

2. On GC-600 Flight Guidance Controller couple the flight director to the desired GTN, insure

the white arrow next to the CPL switch is pointing to the appropriate side.

3. Select FD Bars to ON with switch on glareshield.

4. For Flight Director engagement select NAV on the GC-600 Flight Guidance Controller.

5. For Autopilot engagement select AP on the GC-600 Flight Guidance Controller.

No changes to the operation or annunciations have changed for the Flight Director / Autopilot.

For Flight Director / Autopilot operating instructions, refer to the approved ATR Flight Manual for

the autopilot.

EFIS Display Normal Procedures

Below are the Normal Operating procedures for the GTN Interface to the existing SPZ 6000 EFIS.

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