Boeing ForeFlight Sentry Manual

Sentry
Pilot’s Guide

Copyright © 2022 ForeFlight LLC. All rights reserved.
Unauthorized commercial distribution of this manual or any revisions is strictly prohibited.
ForeFlight® is a registered trademarks of ForeFlight, LLC and may not be used without the
permission of ForeFlight.

WARRANTY INFORMATION
By using your Sentry, Sentry Mini, or Sentry Plus, you accept and agree to the following terms
and conditions:
All device operational procedures must be learned on the ground.
Received traffic information is to be used as an aid to situational awareness and is merely
supplemental and advisory in nature.
uAvionix and its affiliates, including, but not limited to, ForeFlight LLC, is not liable for damages
arising from the use or misuse of this product.
uAvionix products are warranted to be free from defects in material and workmanship for one
year from purchase, except as may be required by local or national law. For the duration of the
warranty period, uAvionix, at its sole option, will repair or replace any product which fails in
normal use. Such repairs or replacement will be made at no charge to the customer for parts
or labor, provided that the customer shall be responsible for any transportation cost.
This warranty does not apply to cosmetic damage, consumable parts, damage caused by
accident, abuse, misuse, water, fire, or flood, damage caused by unauthorized servicing, or
product that has been modified or altered.
IN NO EVENT WILL UAVIONIX, OR ITS AFFILIATES, INCLUDING, BUT NOT LIMITED TO,
FOREFLIGHT, BE LIABLE FOR ANY DIRECT, INCIDENTAL, SPECIAL, INDIRECT, OR
CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR
INABILITY TO USE THE PRODUCT OR FROM DEFECTS IN THE PRODUCT. SOME
STATES DO NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.
Sentry Pilot’s Guide 3

CONTENTS
WARRANTY INFORMATION ......................................................................................3
INTRODUCTION ........................................................................................................6
Mounting Sentry...................................................................................................................7
Connecting to Sentry...........................................................................................................8
Local Network Setting.......................................................................................................8
Firmware Updates ................................................................................................................9
SENTRY...................................................................................................................10
Power Button ......................................................................................................................11
LED Status ......................................................................................................................11
Connecting to Sentry.........................................................................................................12
Sentry Network Name (SSID).........................................................................................12
WPA2 Security ................................................................................................................13
Battery.................................................................................................................................13
SENTRY MINI ..........................................................................................................14
Powering Sentry Mini.........................................................................................................15
LED Status......................................................................................................................15
Connecting to Sentry Mini.................................................................................................16
Sentry Mini Wireless Network.........................................................................................16
SENTRY PLUS.........................................................................................................17
Sentry Plus Features .........................................................................................................17
Power Button......................................................................................................................18
LED Status......................................................................................................................18
OLED Display .....................................................................................................................19
OLED Views....................................................................................................................20
Battery.................................................................................................................................21
Universal USB-C Charging .............................................................................................21
Auto Power .....................................................................................................................21
Connectivity........................................................................................................................22
Sentry Plus Network Name (SSID).................................................................................22
WPA2 Security ................................................................................................................23
Wi-Fi Client Support........................................................................................................24
Simultaneous Data Feeds ..............................................................................................25
Accelerometer (g-Load).....................................................................................................26
Flight Data Recorder..........................................................................................................28
Manually Importing Track Logs .......................................................................................28
FLARM.................................................................................................................................32
ADS-B TRAFFIC ......................................................................................................33
Traffic Icons ........................................................................................................................34
Traffic Alerts .......................................................................................................................35
Synthetic Vision .................................................................................................................35
Hide Distant Traffic ............................................................................................................36
Sentry Pilot’s Guide 4

CONTENTS
Traffic Information Service Broadcast (TIS-B) ................................................................37
How TIS-B is received ....................................................................................................38
ADS-B and TIS-B Differences.........................................................................................38
ADS-B Ownship..............................................................................................................39
False Traffic Alerts ..........................................................................................................40
ADS-B WEATHER....................................................................................................41
ADS-B Ground Based Towers...........................................................................................41
Tower Location on Map...................................................................................................42
FIS-B Tower Tiers and Look-Ahead Range ....................................................................42
Weather Replay ..................................................................................................................44
ADS-B Map Layers .............................................................................................................44
ForeFlight Pack ..................................................................................................................45
Packing with Sentry ........................................................................................................46
CONUS and Regional NEXRAD ........................................................................................47
Animated ADS-B Radar .....................................................................................................48
Cloud Tops (ADS-B) ...........................................................................................................49
Icing (ADS-B) ......................................................................................................................50
Turbulence (ADS-B) ...........................................................................................................51
Freezing Lvls (ADS-B) .......................................................................................................52
AIRMETs, SIGMETs, CWAs................................................................................................53
PIREPs ................................................................................................................................54
Lightning.............................................................................................................................55
METARs...............................................................................................................................56
TAFs.....................................................................................................................................56
SUA......................................................................................................................................57
NOTAMs ..............................................................................................................................57
Winds & Temperatures Aloft .............................................................................................59
WAAS GPS ..............................................................................................................60
Sentry GPS Accuracy .....................................................................................................60
Troubleshooting GPS......................................................................................................61
AHRS ......................................................................................................................62
Mounting Location .............................................................................................................63
Calibrating AHRS ...............................................................................................................64
Automatically Calibrating AHRS .....................................................................................64
CARBON MONOXIDE ..............................................................................................66
CO LEDs..............................................................................................................................66
ForeFlight Mobile Alerts ....................................................................................................66
Alarms .................................................................................................................................67
CO Alarm Test.................................................................................................................67
BAROMETER ..........................................................................................................68
Sentry Pilot’s Guide 5

INTRODUCTION
Sentry portable receivers are compact, powerful devices that deliver real-time weather, traffic,
WAAS GPS, and more to ForeFlight Mobile. Sentry receivers work exclusively with ForeFlight
Mobile on your iPad and iPhone and can connect to five devices simultaneously. For additional
device details, refer to the table below.
Features
Sentry Mini
Sentry
Sentry Plus
Dual-band ADS-B Weather & Traffic
WAAS GPS
Weather Replay
Internal Battery
Pitch and Roll Data (AHRS)
Barometer
CO Sensor
CO Alarm
Flight Data Recorder
FLARM Receiver
Wi-Fi Client Support
Auto On/Off
Accelerometer (g-Load)
OLED Display
Universal USB-C Charging
Sentry Pilot’s Guide 6

INTRODUCTION
Mounting Sentry
Sentry, Sentry Mini, and Sentry Plus can be mounted with the provided RAM mount. RAM
mount includes a quick release that allows you to detach the receiver while leaving the mount
in place. For best results, mount your receiver vertically on a side window where it can have an
unobstructed view of nearby aircraft and ADS-B ground towers.
If no windows are available, place the receiver on a level, flat surface with the LED indicators
facing towards the nose of the aircraft. Aircraft structure can block weather and traffic signals.
If traffic targets are missing from ForeFlight or if you’re unable to receive ADS-B weather, try
moving the receiver in the cockpit to obtain a better signal.
Do not leave your receiver or the mount in an aircraft for extended periods of time when
temperatures are expected to exceed 90º F.
To mount Sentry, Sentry Mini, or Sentry Plus,
1. Place the RAM mount on the window with the screws aligned vertically and
rotate the tabs on opposite sides of the mount clockwise until they snap into
place.
2. Attach Sentry to the RAM mount by aligning the quick release adapter on the
rear of the unit with the slot in the RAM mount. Rotate the receiver clockwise
until it snaps in place.
Sentry Pilot’s Guide 7
Mounting Sentry with included RAM Mount

INTRODUCTION
Connecting to Sentry
Whether you’re connecting to Sentry, Sentry Mini, or Sentry Plus, start by powering the device
on. Sentry and Sentry Plus can be powered on by holding the power button for approximately
two seconds until the LEDs illuminate. Power Sentry Mini on by connecting the provided USB-
C cable to a 5 volt, 2 amp power source.
Once powered on, Sentry receivers create their own
wireless network. Open your iPad or iPhone Settings
app and select Wi-Fi.
Locate Sentry’s wireless network in the Other
Networks section and tap to connect.
Once the iPad or iPhone is connected to Sentry,
open ForeFlight Mobile and select More > Devices to
ensure the Sentry tile appears. If the Sentry tile does
not appear, verify the Wi-Fi connection and ensure
Local Network settings are enabled.
Local Network Setting
Devices with iOS 14 or later require special permission to connect to external devices like
Sentry. If Sentry does not appear in ForeFlight, open the iPad/iPhone Settings app and select
ForeFlight from your list of installed apps. Verify the Local Network Setting is enabled.
Sentry Pilot’s Guide 8
Local Network Setting must be enabled to use Sentry
Sentry Plus Device Tile

INTRODUCTION
Firmware Updates
Sentry firmware updates are provided by ForeFlight.
If updated firmware is available for your Sentry,
Sentry Mini, or Sentry Plus, ForeFlight will prompt
you to update the firmware. If you do not receive a
prompt to update your firmware, ForeFlight has
determined you already have the latest firmware
installed.
If a firmware update is postponed, ForeFlight will not
prompt you to update the next time you connect.
Postponed firmware updates can be accessed from
the Sentry Device page by selecting More > Devices
and tapping the Sentry tile.
Sentry and ForeFlight must remain on while firmware is updated. As firmware is being
updated, ForeFlight displays a progress bar. Firmware update typically take less than a minute
to install.
Sentry Pilot’s Guide 9
ForeFlight Mobile Firmware
Update Prompt
Firmware update being installed

SENTRY
Sentry is the original device designed for ForeFlight to deliver real-time weather, traffic, GPS,
and more. Sentry is equipped with a built-in rechargeable battery capable of 12 hours of use.
Sentry creates a wireless network to connect up to five devices simultaneously.
Sentry Features
Tap a Sentry feature to learn more.
•Dual-Band ADS-B Traffic
•ADS-B Weather
•Weather Replay
•Carbon Monoxide (CO) Sensor
•Attitude Heading Reference System (AHRS)
•12 Hour Rechargeable Battery
•Barometer
Sentry Pilot’s Guide 10

SENTRY
Power Button
Sentry has a single button located in the center of the device. Press and hold the button for
approximately two seconds to power Sentry on or off. When powered on, the ADS-B, CO,
GPS, and PWR LEDs are activated.
LED Status
Sentry has four LEDs. The ADS-B, CO, and GPS LEDs are activated when Sentry is powered
on. The PWR LED is activated when Sentry is charging or powered on. LED brightness is
controlled in Sentry settings by selecting More > Devices > Sentry.
Auto Brightness automatically adjusts LED brightness based on ambient light.
Sentry Pilot’s Guide 11
NOTE: Any data received from an ADS-B tower (including tower information) is considered
reception. A yellow or green ADS-B LED does not guarantee reception of FIS-B data.
Sentry Plus LED Status
Sentry LEDs

SENTRY
Connecting to Sentry
To connect to Sentry, power the device on by holding the power button for approximately two
seconds. When powered on, Sentry creates its own wireless network capable of connecting to
five devices simultaneously.
With Sentry powered on, open the iPad/iPhone Settings app and select Wi-Fi. Locate Sentry’s
wireless network and tap to connect. Sentry’s network name is “Sentry_” followed by a
sequence of random letters and numbers (e.g. Sentry_AV53).
Once you connect to Sentry, your iPad and iPhone will automatically reconnect, provided the
following conditions are met:
•Sentry is powered on.
•iPad/iPhone Wi-Fi is enabled.
•Sentry network name and password have not changed.
•iPad/iPhone is not already connected to another network.
•Auto-Join is enabled in iPad/iPhone Wi-Fi > Sentry settings.
Sentry Network Name (SSID)
The default Sentry network name is generic (e.g., Sentry_AV53). The network name can be
changed if desired. Wireless network names must be unique and between 1 and 32
characters. The network name may contain only letters, numbers, spaces, and underscores.
How to change the network name
To change the wireless network name (SSID), select More > Devices > Sentry > Sentry
Network. Tap the SSID field and enter a network name between 1 and 32 characters. Tap
Done when complete. Once complete, reboot Sentry for the changes to take effect.
How to hide the SSID broadcast
If you don’t want Sentry to broadcast its network for all devices to see, you can disable the
SSID broadcast. Disabling the SSID broadcast hides the network from devices that have not
yet connected to Sentry.
To hide the Sentry network, toggle the SSID Broadcast off in Sentry settings on the Devices
view or Map Settings. Once your iOS device has connected to Sentry, it will automatically
reconnect when the device is powered on, provided auto-join was enabled in Wi-Fi > Sentry
settings. To connect a new device to Sentry with the SSID broadcast disabled
1. Open Wi-Fi settings on your iPad/iPhone.
2. Select Other… from the OTHER NETWORKS section.
3. Manually enter the Sentry network name (SSID) and password (if applicable).
Sentry Pilot’s Guide 12

SENTRY
WPA2 Security
Sentry does not have a passcode by default. A passcode can be assigned from the Maps
Settings or Devices view. To assign a passcode,
1. Select More > Devices > Sentry > Sentry Network.
2. Tap th e WPA2 Security Enabled toggle.
3. Tap New Passcode…
4. Enter a passcode between 8 and 63 characters. The WPA2 passcode may only
contain letters, numbers, spaces, and underscores. WPA2 passcodes are case
sensitive.
5. Tap Done.
6. Restart Sentry by holding the power button for two seconds to power it off.
7. Open the iPad/iPhone Settings app.
8. Select Wi-Fi settings and connect to Sentry using the new passcode.
Resetting a passcode (factory reset)
If you’re unable to connect to Sentry with WPA2 security enabled, perform a factory reset to
remove the passcode. To restore Sentry to factory settings,
1. Power Sentry on.
2. Press and hold the power button until the LEDs flash white (approximately ten
seconds).
3. Power Sentry on.
4. Open the iPad/iPhone Wi-Fi settings and connect to Sentry.
Battery
Sentry is equipped with a single rechargeable battery. The battery is not designed to be
removed or replaced. Sentry exclusively supports USB 5V (volt) 2A (amp) chargers. Sentry will
not charge if connected to a charger that delivers more power than it is designed to accept.
When charging, the Sentry power light is blue. It can take up to 12 hours to charge a depleted
Sentry battery. Sentry's battery percentage can be viewed in ForeFlight Mobile.
To check Sentry battery percentage
1. Connect your iPad/iPhone to Sentry.
2. Disconnect Sentry from the charger (if applicable).
3. Open ForeFlight Mobile > More > Devices > Sentry.
4. Scroll to the Battery field to view battery percentage.
Sentry Pilot’s Guide 13

SENTRY MINI
Sentry Mini is an entry-level, compact ADS-B receiver measuring 3.3 x 2.3 x 0.6 inches and
weighing 44 grams. Sentry Mini provides real-time weather, traffic, and WAAS GPS to
ForeFlight Mobile.
Sentry Mini does not have an internal battery. Power Sentry Mini on by connecting to a
portable or aircraft panel 5-volt power source. Sentry Mini creates a wireless network that can
connect up to five devices simultaneously. Sentry Mini requires ForeFlight Mobile version 11.5
or later.
Sentry Mini Features
Tap a Sentry Mini feature to learn more.
•Dual-Band ADS-B Traffic
•ADS-B Weather
•WAAS GPS
•Weather Replay
Sentry Pilot’s Guide 14

SENTRY MINI
Powering Sentry Mini
Sentry Mini is not equipped with an internal battery. To power Sentry
Mini, plug the provided USB-C cable into a portable or aircraft 5V
(volt) 2A (amp) power source.
When Sentry Mini is powered on, the GPS and ADS-B LEDs
illuminate and Sentry Mini creates a wireless network.
LED Status
Sentry Mini has two LEDs. The ADS-B and GPS LEDs are activated when Sentry Mini is
powered on and will display red, yellow, or green as ADS-B and GPS reception change.
Sentry Pilot’s Guide 15
Sentry Mini USB-C
Cable (included)
NOTE: Any data received from an ADS-B tower (including tower information) is considered
reception. A yellow or green ADS-B LED does not guarantee reception of FIS-B data.

SENTRY MINI
Connecting to Sentry Mini
To connect to Sentry Mini, power the device on by connecting a 5-volt 2 amp power source.
When powered on, Sentry Mini creates its own wireless network capable of connecting five
devices simultaneously.
With Sentry Mini powered on, open the iPad/iPhone Settings app and select Wi-Fi. Locate
Sentry Mini’s wireless network and tap to connect. Sentry Mini's network name is “SentryMini_”
followed by a sequence of random letters and numbers (e.g., SentryMini_AV53).
Once you connect to Sentry Mini, your iPad and iPhone will automatically reconnect, provided
the following conditions are met:
•Sentry Mini is powered on.
•iPad/iPhone Wi-Fi is enabled.
•iPad/iPhone is not already connected to another network.
•Auto-Join is enabled in iPad/iPhone Wi-Fi > SentryMini settings.
Sentry Mini Wireless Network
The default Sentry Mini network name is generic and can not be changed. Sentry Mini wireless
network does not provide an option to require a passcode.
Sentry Mini Factory Restore
Sentry Mini does not have a method for restoring to factory defaults.
Sentry Pilot’s Guide 16

SENTRY PLUS
Sentry Plus is the latest, most capable Sentry receiver available for use with ForeFlight Mobile
version 14.4 or later. Sentry Plus is a battery-powered device that delivers real-time weather,
traffic, GPS, and more to ForeFlight Mobile.
Sentry Plus Features
Tap a Sentry Plus feature to learn more.
•Dual-Band ADS-B Traffic
•ADS-B Weather Receiver
•Weather Replay
•FLARM Receiver
•Carbon Monoxide (CO) Sensor
•Pitch and Roll (AHRS)
•Accelerometer (g-Load)
•18 Hour Rechargeable Battery
•Flight Data Recorder
•OLED Display
•Barometer
•Advanced Wi-Fi Capability
Sentry Pilot’s Guide 17

SENTRY PLUS
Power Button
Sentry Plus has a single button located below the OLED display. Press and hold the button for
two seconds to power Sentry Plus on or off. When powered on, the OLED display, ADS-B, CO,
GPS, and PWR LEDs are activated.
LED Status
Sentry Plus has four LEDs. The ADS-B, CO, and GPS LEDs are activated when Sentry Plus is
powered on.
The PWR LED is activated when Sentry Plus is charging or powered on. LED brightness can
be controlled in Sentry Plus settings by selecting More > Devices > Sentry Plus. Auto
Brightness automatically adjusts LED brightness based on ambient light.
Sentry Pilot’s Guide 18
Sentry Plus LED Status
NOTE: Any data received from an ADS-B tower (including tower information) is considered
reception. A yellow or green ADS-B LED does not guarantee reception of FIS-B data.

SENTRY PLUS
OLED Display
Sentry Plus is equipped with an OLED display. The display is automatically enabled when the
device is powered on and remains on until the device is powered off. When Sentry Plus is
initially powered on, a splash screen depicts the Sentry logo and installed firmware version.
After the splash screen, Sentry Plus displays the first of four possible views.
As various actions occur, additional messages can appear on the OLED display. A list of
possible OLED messages with definitions is found below.
•Connected! is displayed each time an iPad or iPhone connects to the Sentry Plus
wireless network.
•Disconnected is displayed each time an iPad or iPhone disconnects from the Sentry
Plus wireless network.
•Connected to ForeFlight is displayed when ForeFlight Mobile connects to Sentry Plus.
•Log Download in Progress displays as ForeFlight Mobile downloads Track Logs from
Sentry Plus.
•Looking for Network is displayed when Sentry Plus is configured to join another
network, and the network is not actively connected.
•Connected to …. is displayed when Sentry Plus connects to another network.
•Firmware Updated Successfully appears after Sentry Plus firmware has updated.
Sentry Pilot’s Guide 19
OLED Display
Power Button

SENTRY PLUS
OLED Views
The Sentry Plus OLED display contains four views. Each view displays real-time information.
The Sentry Plus log indicates Sentry Plus is connected to ForeFlight. Press the power button
to cycle between the available views.
•Acceleration depicts real-time accelerometer data. Acceleration is measured on the
pitch axis. While straight and level, the acceleration view indicates 1.0g.
•CO Status depicts carbon monoxide concentration. Elevated levels of CO are depicted
as Caution or Danger. If Caution or Danger is displayed on the OLED screen, the
concentration level (ppm) is displayed in a ForeFlight Mobile alert.
•Speed depicts ground speed in knots. If a groundspeed of seven knots or less is
detected, Sentry Plus displays Speed (kts) < 7.
•Accuracy depicts the accuracy of the Sentry Plus integrated WAAS GPS. Accuracy is
determined by the Sentry Plus GPS processor.
Sentry Pilot’s Guide 20
Accuracy (meters)
CO Status
Acceleration (g-Load)
Groundspeed (knots)