Appareo Stratus ES User manual

This document and the information
contained herein are the property of
Appareo Systems, LLC and are
confidential. They may not be disseminated
or redistributed without the written
permission of Appareo Systems, LLC
APPAREO SYSTEMS, LLC
FARGO, NORTH DAKOTA 58102
Stratus ES/ESG Maintenance Manual
DOCUMENT NUMBER
600845-000024
Document Type
Certification
Last Revised
20 February 2018
REV
2.2
Sheet
1 of 28
Maintenance Manual
Appareo Systems Stratus ES/ESG System
SERIAL NUMBER:___________________
REGISTRATION NUMBER:____________

Stratus ES/ESG Maintenance Manual
Rev: 2.2
Last Revised: February 20, 2018
Document Number: 600845-000024
Page 2 of 28
Record of Revision
Related Documentation
Document Number Title
600840-000031 Stratus ES/ESG Installation Instructions
600890-000049 Stratus ES/ESG Pilot’s Guide
601837-000024 Stratus ES/ESG Installation Drawings and Wiring Diagrams
Warranty
To view the Stratus ES/ESG warranty, log into the Appareo Dealer Portal or
visit www.appareo.com/resources.
Revision
Number Change Description Effective Date Inserted By
1.0 Initial Release 5/29/2015 Angela Lorenz
1.1 CM 10304 1/05/2016 Angela Lorenz
1.2 CM 10612 2/15/2016 Angela Lorenz
1.3 CM 11328 5/11/2016 Angela Lorenz
1.4 CM 11509 6/08/2016 Angela Lorenz
2.0 CM 13666 4/18/2017 Angela Lorenz
2.1 CM 13666 6/29/2017 Angela Lorenz
2.2 Updated SW and CEH revision levels in Table 4, added alternate COTS number for screw, Table 6,
added Transmitter Failure Display in Section 10.1.2 2/20/2018 Angela Lorenz

Stratus ES/ESG Maintenance Manual
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Last Revised: February 20, 2018
Document Number: 600845-000024
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Table of Contents
Abbreviations and Definitions..................................................................................................... 6
1. INTRODUCTION............................................................................................................ 7
1.1. PURPOSE................................................................................................................ 7
1.2. CERTIFICATION INFORMATION............................................................................ 7
1.3. SYSTEM DESCRIPTION ......................................................................................... 9
1.4. TOOLS....................................................................................................................10
1.5. WEIGHT AND BALANCE INFORMATION..............................................................10
1.6. EQUIPMENT DIMENSIONS....................................................................................11
1.7. ELECTRICAL SPECIFICATIONS............................................................................11
1.8. POWER REQUIREMENTS.....................................................................................11
2. AIRWORTHINESS LIMITATIONS.................................................................................12
3. INSPECTION REQUIREMENTS AND OVERHAUL (ATA CHAPTER 5).......................12
3.1. GENERAL INSPECTION INFORMATION...............................................................12
4. DIMENSIONS AND ACCESS (ATA CHAPTER 6).........................................................13
4.1. COMPONENT LOCATIONS....................................................................................13
4.2. MAINTENANCE INSTRUCTIONS...........................................................................13
4.3. FUNCTIONAL TESTS.............................................................................................16
5. LIFTING AND SHORING (ATA CHAPTER 7)................................................................19
5.1. LIFTING INFORMATION.........................................................................................19
5.2. SHORING INFORMATION......................................................................................19
6. LEVELING AND WEIGHING (ATA CHAPTER 8)..........................................................19
6.1. LEVELING INFORMATION.....................................................................................19
6.2. WEIGHING INFORMATION....................................................................................19
7. TOWING AND TAXIING (ATA CHAPTER 9).................................................................19
7.1. TOW INSTRUCTIONS............................................................................................19
7.2. TAXIING INSTRUCTIONS ......................................................................................19
8. PARKING, MOORING AND STORAGE (ATA CHAPTER 10) .......................................20
8.1. MOORING INFORMATION.....................................................................................20
8.2. PARKING INFORMATION......................................................................................20
8.3. STORAGE LIMITATIONS .......................................................................................20
9. PLACARDS AND MARKINGS (ATA CHAPTER 11)......................................................20
10. SERVICING (ATA CHAPTER 12)..................................................................................20
10.1. SERVICING INFORMATION...................................................................................20

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10.2. LUBRICATION INFORMATION ..............................................................................23
10.3. EQUIPMENT REQUIRED FOR SERVICING ..........................................................23
10.4. CONSUMABLE MATERIALS..................................................................................23
11. WIRING DIAGRAMS.....................................................................................................24

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Last Revised: February 20, 2018
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List of Figures
Figure 1: Stratus ES/ESG installation diagram..........................................................................13
Figure 2: Locking mechanism location......................................................................................14
Figure 3: Software update wiring diagram.................................................................................15
Figure 4: Interface for Stratus ES/ESG functional tests.............................................................18
Figure 5: Pin-out .......................................................................................................................24
Figure 6: Stratus ES wiring diagram with parallel altitude encoder............................................25
Figure 7: Stratus ES wiring diagram with serial altitude encoder...............................................26
Figure 8: Stratus ESG wiring diagram with parallel altitude encoder .........................................27
Figure 9: Stratus ESG wiring diagram with serial altitude encoder ............................................28
List of Tables
Table 1: TSO compliance........................................................................................................... 7
Table 2: TSO deviations............................................................................................................. 8
Table 3: Criticality level .............................................................................................................. 8
Table 4: Embedded hardware and software............................................................................... 9
Table 5: Required hardware (LRUs)........................................................................................... 9
Table 6: Required hardware (COTS components) ....................................................................10
Table 7: Required tools.............................................................................................................10
Table 8: Stratus ES/ESG weight ...............................................................................................11
Table 9: Equipment dimensions................................................................................................11
Table 10: Electrical specifications .............................................................................................11
Table 11: Power requirements..................................................................................................11
Table 12: Scheduled maintenance............................................................................................12
Table 13: Troubleshooting guide...............................................................................................23

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Last Revised: February 20, 2018
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Abbreviations and Definitions
Abbreviation Term Definition
CFR Code of Federal
Regulations
Codification of the general and permanent rules and
regulations published in the Federal Register by the
executive departments and agencies of the United
States Federal government.
ES Extended Squitter
A periodic message that provides position, velocity,
and time. Part of the marketing name for Stratus ES.
ESG
Extended Squitter and
GPS
Part of the marketing name for Stratus ESG.
FAA Federal Aviation
Administration
Agency of the United States Department of
Transportation with authority to regulate and oversee
all aspects of civil aviation in the United States.
Gb Gigabit
Unit of information or computer storage equal to
1,000,000,000 bits (equal to 125 megabytes).
GPS
Global Positioning
System
A system used to identify the longitude, latitude and
in some instances the altitude of a given object.
Hz
Hertz
Unit of frequency based upon cycles per second.
TSO Technical Standard
Order
Minimum performance standard for specified
materials, parts, and appliances used on civil aircraft
(FAA definition).
WAAS Wide Area
Augmentation System
System of ground-based antennas whose precisely
known locations are used to correct satellite signals
and provide greater positional and integrity of service
to aircraft in flight.

Stratus ES/ESG Maintenance Manual
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Last Revised: February 20, 2018
Document Number: 600845-000024
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1. INTRODUCTION
1.1. PURPOSE
This Maintenance Manual describes the recommended and required maintenance practices to
maintain the Appareo Systems Stratus ES and Stratus ESG systems.
Electronic media or hard copy revisions/updates to this document will be made available to all
owners if contact information is provided to the manufacturer. Aircraft owners are encouraged to
provide up-to-date information to ensure timely access to new information. You can contact the
manufacturer at:
Appareo Systems, LLC
1830 NDSU Research Circle North
Fargo, ND 58102
To view the most current version of this document, go to appareo.com/dealer-portal
or www.appareo.com/resources.
All structural and general maintenance must be performed in accordance with the aircraft’s
Standard Practices Manual and FAA AC 43.13-1B.
1.2. CERTIFICATION INFORMATION
1.2.1. TSO and FCC compliance
TSO
Stratus ES/ESG is compliant with the following Technical Standard Orders:
Reference/Issue Title
FAA TSO-C112e
Technical Standard Order: Air Traffic Control Radar Beacon
System/Mode Select (ATCRBS / Mode S) Airborne Equipment
FAA TSO-C145d
(Stratus ESG only)
Technical Standard Order: Airborne Navigation Sensors Using The
Global Positioning System
FAA TSO-C166b
Technical Standard Order: Extended Squitter Automatic Dependent
Surveillance – Broadcast (ADS-B) and Traffic Information Service –
Broadcast (TIS-B) Equipment Operating on the Radio Frequency of
1090 Megahertz (MHz)
Table 1: TSO compliance
FCC
Stratus ES/ESG has an FCC ID of 2AETC-1505005.

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1.2.2. TSO deviations
TSO Section Deviation
TSO-C145d
(Stratus ESG only)
Section 3, Subpart D
Environmental qualification testing was
performed to DO-160G, not DO-160E.
Table 2: TSO deviations
1.2.3. Non-TSO functions
Below are Stratus ES/ESG’s non-TSO functions:
•VFR key (and configuration).
This non-TSO function does not interfere with Stratus ES/ESG’s compliance with the
requirements of the TSOs listed in Section 1.2.1.
1.2.4. Environmental qualifications
Stratus ES/ESG is tested to DO-160G. The Stratus ES/ESG Environmental Qualification form is
found in Appendix A of the Stratus ES/ESG Installation Instructions (600840-000031).
1.2.5. Criticality level
Software level determination is based on the Functional Hazard Assessment (FHA) and
Preliminary System Safety Assessment (PSSA). These assessments determined that the most
severe failure conditions (see Table 1) are classified as Major. As such, the Software Assurance
Level has been determined to be Major.
Major failure conditions would reduce the capability of the aircraft or the ability of the crew to
cope with adverse operating conditions to the extent that it would be a significant reduction in
safety margins or functional capabilities or a significant increase in crew workload. Software
whose anomalous behavior would cause or contribute to a failure of the system function
resulting in a Major failure condition for the aircraft is identified as Level C.
Function Description Classification
ATCRBS / Mode S
Transponder
Malfunction of the ATCRBS / Mode S
transponder function without warning
Major
ADS-B Out
Broadcast of incorrect ADS-B messages
without warning
Major
GPS/SBAS Receiver
(Stratus ESG only)
Loss or malfunction of the GPS/SBAS receiver
function
Major
Pressure Altitude Output
Failure of the pressure altitude output function
Major
RF Feed-Through
Malfunction of the RF feed-through function
without warning
Major
Table 3: Criticality level

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1.3. SYSTEM DESCRIPTION
Stratus ES and Stratus ESG by Appareo are panel-mounted level 2els Class 1 Extended
Squitter transponders. They are Class B1S transponders which are ADS-B Out compliant.
Stratus ES and Stratus ESG respond to legacy Mode A/C interrogations and Mode S
interrogations from both ground radar and airborne collision avoidance systems. To support the
ADS-B Out function, Stratus ESG also contains a Class Beta 1 GPS/WAAS receiver. Stratus ES
receives GPS information from approved GPS position sources.
1.3.1. Operation of Stratus ES/ESG
See the Stratus ES/ESG Pilot’s Guide (600890-000049) for a full description of
Stratus ES/ESG’s function.
1.3.2. Embedded Hardware and Software
The embedded hardware and software information listed below is current as of the time of
publication of this document.
Description Part number Revision
(or later FAA approved)
Embedded Hardware (FPGA)
501010-000109
R05
Software (DSC)
501010-000113
R07
Table 4: Embedded hardware and software
Refer to Section 4.2.3 for software/embedded hardware update procedures.
1.3.3. Stratus ES/ESG parts catalog
The following parts are required for the installation of Stratus ES/ESG.
Line Replaceable Units (LRUs):
Item Appareo Part Number Commercial Part
Number Quantity
Backplate
153510-000015
-
1
Stratus ES Transponder
or
Stratus ESG Transponder
153510-000069
or
153510-000017
- 1
Stratus ESG Rack
153540-000027
-
1
RF TNC Pass Through Adapter
(Stratus ESG only)
251015-000077 - 1
RF BNC Pass Through Adapter
251015-000078
-
1
Table 5: Required hardware (LRUs)

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COTS components:
Item Appareo Part
Number Commercial Part Number Quantity
#6-32 x 100° Flat Head SS
Screw
-
MS24693, AN507R or
other approved fastener
6
Metal Hex Stop Nut *
-
MS21042-06
6
Monadnack Clip Nut 6-32*
-
294667
6
Replacement pins
-
M39029/63-368
-
37 Pin DSUB Connector
251015-000074
M24308/2-4F
1
Screw 356060-000007
-
(ALT: MS51957-13)
6
Strain Relief Backshell
356070-000006
M85049/48-1-4F
1
Table 6: Required hardware (COTS components)
*These parts are identified as usable components, but are not identified as the only components
that can be used. Installer must determine if the part is appropriate for specific installation or if
an alternate part is required.
Stratus ES/ESG also requires input from a GPS position source (Stratus ES) or GPS antenna
(Stratus ESG), transponder antenna, and altitude encoder. See Stratus ES/ESG Installation
Instructions (600840-000031) for equipment requirements.
1.4. TOOLS
The following tools may be needed for maintenance of Stratus ES/ESG.
Tool Part Number Used For
3/32” hex driver -
Securing locking mechanism through
the face plate
External retaining ring pliers
-
RF pass through adapter
Crimp tool
M22520/2-01
DSUB pins
Positioner
M22520/2-08
DSUB pins
Insertion/extraction tool
M81969/39-01
DSUB pins
Table 7: Required tools
1.5. WEIGHT AND BALANCE INFORMATION
The total weight of the Stratus ES/ESG system and related hardware is less than 4 lbs.
Compute a Chart “C” in accordance with the table below, noting the proper aircraft station to
obtain balance information.
Component Weight
Stratus ES/ESG Unit Weight
2.8 lbs. (1.3 kg)
Stratus ES/ESG Total Installed Weight
(Transponder, rack, and connectors)
3.3 lbs. (1.5 kg)

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Table 8: Stratus ES/ESG weight
1.6. EQUIPMENT DIMENSIONS
Dimensions for Stratus ES/ESG are outlined in the table below. All figures given are
representative of maximum equipment dimensions (where applicable).
Characteristic Specification
Bezel Width
6.38 inches (162 mm)
Bezel Height
1.69 inches (43 mm)
Rack Width
6.32 inches (160.4 mm)
Rack Height
1.65 inches (42 mm)
Depth from back of bezel to end of strain relief on rack
(not compensating for wire bend radius)
10.75 inches (273 mm)
Table 9: Equipment dimensions
1.7. ELECTRICAL SPECIFICATIONS
Characteristic Specification
Altitude
Up to 25,000 ft
External Suppression Input
Low ≤0.5 V
High ≥5 V (suppressed)
Mode A Capability
4096 Identification Codes
Mode C Altitude Capability
Parallel altitude encoder: up to 62,700 ft
Serial altitude encoder: up to 126,700 ft
Mode S Capability
Parallel altitude encoder: up to 62,700 ft
Serial altitude encoder: up to 126,700 ft
Operational Temperature Range
-20°C to +55°C
Receiver Frequency
1030 MHz
Receiver Sensitivity
-74 dBm nominal for 90% replies
Transmitter Frequency
1090 MHz ± 1 MHz
Transmitter Power
310 Watts nominal
Table 10: Electrical specifications
1.8. POWER REQUIREMENTS
Characteristic Specification
Input Voltage Range
11 to 36 Vdc
Nominal Current Draw
0.28 A at 28 Vdc
0.5 A at 14 Vdc
Power Input
8 W Typical
59.5 W Max
Table 11: Power requirements

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Document Number: 600845-000024
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2. AIRWORTHINESS LIMITATIONS
This Airworthiness Limitations section is FAA approved and specifies inspections and other
maintenance required under §43.16 and §91.403 of the Federal Aviation Regulations unless an
alternate program has been FAA approved.
There are no airworthiness limitations associated with this type design change.
3. INSPECTION REQUIREMENTS AND OVERHAUL (ATA
CHAPTER 5)
Requirement
Inspection
Special Inspection
Inspection Term
1. Inspect Stratus ES/ESG for damage.
NOTE: 1, 2, 3
12 months
2. Inspect Stratus ES/ESG wiring and connectors
for security.
NOTE: 1, 2, 3 12 months
3. Inspect Stratus ES/ESG connector contacts
and attachment hardware for corrosion.
NOTE: 2 12 months
4. Clean Stratus ES/ESG.
As necessary
5. In accordance with 14 CFR 91.411 and 91.413,
inspect and test Stratus ES/ESG for the interface
with each static pressure system, altimeter
instrument, automatic pressure altitude reporting
system, or any other integrated system using the
tests and specifications in 14 CFR Part 43,
Appendix E and F.
24 months
or
After any maintenance
performed on integrated
systems including
maintenance performed
on Stratus ES/ESG
where data
correspondence error
could be introduced
Table 12: Scheduled maintenance
NOTES:
1. This item requires inspection following a hard landing event.
2. This item requires inspection following a lightning strike event.
3. This item requires inspection following a propeller strike event.
3.1. GENERAL INSPECTION INFORMATION
Removal and installation instructions are found in this document. Manufacturer’s installation
manuals and basic aircraft maintenance manuals should be used for additional reference
material. Component maintenance must be completed by an authorized repair facility. Refer to
Section 10: Servicing. If for any reason during inspection Stratus ES/ESG fails inspection or is
otherwise not working properly, read the instructions contained in this manual before removing
any Stratus ES/ESG components. If difficulty is encountered, seek assistance by contacting the
manufacturer.

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4. DIMENSIONS AND ACCESS (ATA CHAPTER 6)
4.1. COMPONENT LOCATIONS
Stratus ES/ESG: Stratus ES/ESG is panel mounted.
GPS position source (Stratus ES):Compatible GPS position sources are panel mounted.
GPS antenna (Stratus ESG):Typical GPS antenna installation locations are on the top of the
aircraft or on the empennage with consideration for line of sight with satellites.
Transponder antenna:The transponder antenna should be mounted vertically on the bottom of
the aircraft.
Altitude encoder:The altitude encoder should be installed using the manufacturer’s
instructions and recommendations.
4.2. MAINTENANCE INSTRUCTIONS
The following instructions are in addition to the standard practices used to maintain the aircraft
structure, the wiring described in the aircraft manufacturer’s maintenance manual, and FAA
Advisory Circular 43.13-1B.
4.2.1. Stratus ES/ESG System Removal
STRATUS ESG TRANSPONDER
153510-000017
or
STRATUS ES TRANSPONDER
153510-000069
STRATUS ESG RACK
153540-000027
BACK PLATE W/ DSUB
AND RF CONNECTORS
Figure 1: Stratus ES/ESG installation diagram

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Figure 2: Locking mechanism location
To remove the Stratus ES/ESG assembly:
Turn the 3/32 hex wrench counter-clockwise on the locking mechanism through the front of
Stratus ES/ESG to loosen the lock until the transponder connectors disconnect. Keep loosening
the unit until it stops sliding out of the install rack. Do not loosen any further. Pull out
Stratus ES/ESG by hand.
4.2.2. Stratus ES/ESG System Replacement
To replace the Stratus ES/ESG assembly:
1. Adjust the locking mechanism on Stratus ES/ESG using a 3/32 hex wrench so that the
front lobe is in a vertical position. Insert the unit by hand until it comes to a stop. This
occurs when the front lobe contacts the clearance slot of the install rack.
2. Tighten the locking mechanism with the 3/32 hex wrench until it is tight and the
connectors have mated. Do not overtighten. If the mechanism will not tighten, verify that
Stratus ES/ESG is properly seated in the rack. The unit is fully seated when the unit
does not move back when tightening the locking mechanism.
NOTE: Ensure that the transponder is seated as far back as possible against the
backplate so that there is a secure connection between the transponder and the
connectors.
NOTE: Conduct the applicable functional tests in Section 4.3 after replacing the
Stratus ES/ESG assembly.
4.2.3. Software Update
The following equipment is required to perform a software update:
•Portable computer with Windows operating system
•Stratus ES/ESG Software Update Tool desktop software (See Step 4)
•Stratus ES/ESG software/embedded hardware update (See Step 4)
•3 amp power supply
•D-sub wiring harness
•Serial to USB adapter (optional)

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To perform a software/embedded hardware update, complete the following steps:
1. Use the following diagram to wire the transponder for a software update.
NOTES:
SOME DETAIL IS REMOVED FOR CLARITY
1 UNLESS OTHERWISE SPECIFIED, ALL WIRING TO BE DONE WITH 22 AWG WIRING
STRATUS ES/ESG
AIRCRAFT POWE R 1
AIRCRAFT GND 1
SOFTWARE UPDATE ENABLE
RS232-RX MAINTENANCE
RS232-TX MAINTENANCE
AUX GND
XPNDR ANTE NNA
2
1
8
3
22
18
11-33 VDC (Min 3A power Supply)
COMPUTER
OUT
IN SERIAL PORT
GND
D-SUB
RF
(BNC)50 OHM LOAD
Figure 3: Software update wiring diagram
2. Plug the serial port connector into the computer. A serial to USB adapter may be
required. If the adapter requires you to install drivers, install them.
3. Power on Stratus ES/ESG. It will enter into software update mode.
NOTE: The screen will be black, but the keypad will illuminate.
4. Apply the software/embedded hardware update.
a. Download the Stratus ES/ESG Update Tool and update file.
i. Dealers: Log in to the Appareo Dealer Portal, then navigate
to appareo.com/dealer-portal/service-bulletins.
Experimental pilots: Navigate to www.appareo.com/resources and click
“Service Bulletins.”
ii. Download the Stratus ES/ESG Update Tool (if you have not already done so)
and the update file for your transponder model. When prompted, install the
software by following the on-screen prompts.
b. Open the Stratus ES/ESG Update Tool.
c. Click the box below “Update File” and navigate to the update file that was
downloaded in Step 4.a.

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d. Use the “Port” drop-down menu to select the computer port that is connected to
Stratus ES/ESG.
e. Click Update. A pop-up box will appear when the update begins and completes.
5. Verify that the software/embedded hardware update has applied correctly.
a. Remove the grounding pin (pin 8).
b. Turn off Stratus ES/ESG and enter into configuration mode (while holding the
FUNC key, press and release the PWR key).
c. Press FUNC or the arrow keys to advance to the software versions diagnostic
screens and verify that the most recent programmed configuration appears.
Refer to the service bulletin alerting you of the software update for the most
recent programmed configuration.
4.2.4. Stratus ES/ESG Configuration
See Stratus ES/ESG Installation Instructions (600840-000031) for instructions for how to
configure Stratus ES/ESG if a replacement has been installed or the unit is new to this aircraft.
4.3. FUNCTIONAL TESTS
When installed in accordance with these installation instructions, Stratus ES/ESG complies with
14 CFR Part 91.227.
Final installation checks for Stratus ES/ESG are the responsibility of the installer. The installer
must ensure that Stratus ES/ESG is installed on an aircraft that coincides with the approval
given within the testing performed for the TSOs held by this device (TSO-C112e, TSO-C145d
(Stratus ESG only), and TSO-C166b). Refer to Appendix A of the Stratus ES/ESG Installation
Instructions (600840-000031).
After installation is complete, verify operation as identified in 14 CFR Part 43, Appendix F. The
IFR6000 with OPT3 (manufactured by Cobham AvComm – formerly Aeroflex Test Solutions) or
equivalent test set can be used to determine compliance.
Additional testing requirements can be found in Chapter 4 of Advisory Circular (AC) 20-165B.
Additional functional tests may be required.
When installed correctly, Stratus ES/ESG complies with 14 CFR Part 91.215 & 91.225. While in
airspace specified in 14 CFR Part 91.215, Stratus ES/ESG must be maintained to 14 CFR Part
91.413.
In addition to maintaining compliance to the regulations above, perform the following operational
tests after configuration. Depending on the maintenance performed, an EMI test might also be
required. See Stratus ES/ESG Installation Instructions (600840-000031) for EMI test
procedures.

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NOTE: Tests should be executed in an area where the aircraft has an unimpeded view of the
sky, such that a proper GPS fix can be established.
4.3.1. Power bus
Turn on the power to the aircraft. Verify that the unit powers on.
4.3.2. Discrete inputs
NOTE: Depending on the installation, the functional tests for the following discrete inputs
are optional.
1. Turn off Stratus ES/ESG and enter into configuration mode on Stratus ES/ESG
(while holding the FUNC key, press and release the PWR key).
2. Press FUNC or the arrow keys to advance to the external input diagnostics
screen. The screen displays the real-time state of the external standby, external
IDENT, and squat switch inputs.
3. Activate and deactivate each discrete input and verify that the proper state is
reflected on the display.
•External standby: Ground each transponder’s external standby pin and verify
that the state is “inactive.”
•External IDENT: Activate the external switch and verify that the state is
“active.”
•Squat switch: Activate the squat switch and verify that the correct state is
shown.
4.3.3. Analog inputs
1. Enter into configuration mode on Stratus ES/ESG.
2. Press FUNC or the arrow keys to advance to the analog input diagnostics
screen. The screen displays the real-time values read from the lighting bus and
ambient light sensor.
3. Block the ambient lighting sensor input. Verify that the signal percentage drops.

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Figure 4: Interface for Stratus ES/ESG functional tests
4. Shine a light on the ambient light sensor. Verify that the signal percentage
increases.
5. If you are using the 14V or 28V lighting bus: Adjust the lighting bus input to
minimum. Verify that the displayed value is 0%.
6. If you are using the 14V or 28V lighting bus: Adjust the lighting bus input to
maximum. Verify that the displayed value is 100%.
4.3.4. GPS position source (Stratus ES)
1. Enter into configuration mode on Stratus ES.
2. Press FUNC or the arrow keys to advance to the GPS receiver diagnostic
screen.
3. Verify that the NIC value, latitude, and longitude are all non-zero numbers.
4.3.5. GPS antenna (Stratus ESG)
1. Turn off all avionics except Stratus ESG.
2. Enter into configuration mode on Stratus ESG.
3. Press FUNC or the arrow keys to advance to the GPS receiver diagnostic screen
and wait until the NIC value is a non-zero number.
4. Turn on one avionic at a time. Verify that the NIC value does not drop below 7.

Stratus ES/ESG Maintenance Manual
Rev: 2.2
Last Revised: February 20, 2018
Document Number: 600845-000024
Page 19 of 28
4.3.6. Altitude encoder
1. Enter into configuration mode on Stratus ES/ESG.
2. Press FUNC or the arrow keys to advance to the altitude diagnostic screen.
3. Verify that the altitude displayed is correct to your geographic location.
5. LIFTING AND SHORING (ATA CHAPTER 7)
5.1. LIFTING INFORMATION
5.1.1. Jacking Information
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
5.1.2. Lifting Information
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
5.2. SHORING INFORMATION
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
6. LEVELING AND WEIGHING (ATA CHAPTER 8)
6.1. LEVELING INFORMATION
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
6.2. WEIGHING INFORMATION
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
7. TOWING AND TAXIING (ATA CHAPTER 9)
7.1. TOW INSTRUCTIONS
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
7.2. TAXIING INSTRUCTIONS
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)

Stratus ES/ESG Maintenance Manual
Rev: 2.2
Last Revised: February 20, 2018
Document Number: 600845-000024
Page 20 of 28
8. PARKING, MOORING AND STORAGE (ATA CHAPTER
10)
8.1. MOORING INFORMATION
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
8.2. PARKING INFORMATION
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
8.3. STORAGE LIMITATIONS
No change to basic aircraft Instructions for Continued Airworthiness (Maintenance Manuals)
9. PLACARDS AND MARKINGS (ATA CHAPTER 11)
Ensure that the labeling is in accordance with AC 43.13-2B, Chapter 2, Section 207, Sub-
Section f., Paragraph (4).
10. SERVICING (ATA CHAPTER 12)
10.1. SERVICING INFORMATION
The Stratus ES/ESG system has a number of internal self-test features. See Section 10.1.2 for
a troubleshooting guide.
10.1.1. Component Repair
Equipment determined in need of repair must be returned to a properly rated repair facility that
is trained and qualified.
Appareo provides repair services and has an authorized repair station.
To utilize Appareo's repair services, contact Appareo support for a Return Merchandise
Authorization (RMA) number. Return all defective and suspected defective components to the
following address for repair and replacement.
Appareo Systems, LLC
Attn: [RMA Number]
1830 NDSU Research Circle North
Fargo, ND 58102
For additional information, contact Appareo Systems at [phone].