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Related Manuals for Boeing ForeFlight Sentry
Summary of Contents for Boeing ForeFlight Sentry
- Page 1 Sentry Pilot’s Guide...
- Page 2 Copyright © 2025 ForeFlight LLC. All rights reserved. Unauthorized commercial distribution of this manual or any revisions is strictly prohibited. ForeFlight® is a registered trademark of ForeFlight, LLC, and may not be used without the permission of ForeFlight.
- Page 3 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 •...
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Page 4: Table Of Contents
CONTENTS INTRODUCTION ....................7 Dimensions ........................8 Mounting Sentry ......................9 Powering On Sentry ....................11 Connecting an iPad or iPhone to Sentry ..............11 Firmware Updates .....................13 SENTRY PLUS ....................14 Sentry Plus Features ....................14 Power Button ......................15 LED Status ........................16 OLED Display ......................17 Battery ........................19 Connectivity .......................22 Wi-Fi Client Support ....................27 Accelerometer (g-Load) .....................29... - Page 5 CONTENTS GPS Accuracy ......................49 BAROMETER ....................52 Displaying Pressure Altitude ..................52 Displaying Cabin Pressure ..................53 AHRS ......................54 Setting the Mounting Location for Sentry ..............55 Calibrating AHRS ......................56 ADS-B TRAFFIC .....................58 Receiving ADS-B Traffic with Sentry .................58 Displaying ADS-B Traffic in ForeFlight ..............58 Traffic Icons .......................59 Traffic Alerts .......................60 Synthetic Vision ......................61...
- Page 6 CONTENTS Winds & Temperatures Aloft ..................86 CARBON MONOXIDE ..................87 CO LEDs ........................87 ForeFlight Mobile Alerts .....................87 Alarms ........................88 TROUBLESHOOTING ..................89 Sentry Plus ........................89 Sentry ........................90 Sentry Mini ........................91 CHANGE HISTORY ..................92 Sentry Pilot’s Guide...
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Page 7: Introduction
INTRODUCTION Sentry portable receivers are compact and powerful devices that provide real-time weather, traffic, WAAS GPS, and more to ForeFlight Mobile. These receivers are exclusively compatible with ForeFlight Mobile and can connect to up to five devices simultaneously. Refer to the table below to compare Sentry features. Features Sentry Mini Sentry... -
Page 8: Dimensions
INTRODUCTION Dimensions Sentry receivers are portable and compact, designed to fit easily into most flight bags. Their dimensions are shown in the image below. NOTE: Sentry units sold before November 2023 measure 2.3 inches wide × 3.3 inches high × 1.5 inches deep. Sentry Pilot’s Guide... -
Page 9: Mounting Sentry
INTRODUCTION Mounting Sentry Sentry, Sentry Mini, and Sentry Plus can be mounted using the provided RAM mount, which features a quick-release mechanism that allows the receiver to be detached while leaving the mount in place. For best performance, mount the receiver vertically on a side window with an unobstructed view to allow reception from nearby aircraft and ADS-B ground towers. -
Page 10: Mounting Instructions
INTRODUCTION Mounting Instructions To mount Sentry, Sentry Mini, or Sentry Plus, follow these steps: 1. Attach the RAM mount to a window: Align the screws vertically. • Rotate the tabs on opposite sides of the mount clockwise until they snap into •... -
Page 11: Powering On Sentry
INTRODUCTION Powering On Sentry Sentry, Sentry Mini, and Sentry Plus must be powered on before connecting to an iPad or iPhone. To power on Sentry and Sentry Plus: Press and hold the power button for • approximately two seconds until the LEDs illuminate. To power on Sentry Mini: Connect the provided USB-C cable to a 5-volt, 2-amp •... - Page 12 INTRODUCTION Enabling Local Network Access Devices running iOS 14 or later require special permission to connect to external devices like Sentry. To enable Local Network access for ForeFlight Mobile: 1. Open the Settings app on the iPad or iPhone. 2. Scroll down and select Apps. 3.
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Page 13: Firmware Updates
INTRODUCTION Firmware Updates ForeFlight Mobile provides firmware updates for Sentry, Sentry Mini, and Sentry Plus. If an update is available, ForeFlight Mobile will prompt the user to install it. If no prompt appears, the latest firmware is already installed. Firmware Update Menu Managing Firmware Updates If a firmware update prompt is postponed by tapping Later, ForeFlight Mobile will not prompt for the update the next time Sentry is connected. -
Page 14: Sentry Plus
SENTRY PLUS Sentry Plus is the most advanced Sentry receiver available for use with ForeFlight Mobile. This portable, battery-powered device delivers real-time weather, traffic, GPS, and more to ForeFlight Mobile. Sentry Plus Features Select a feature to learn more about the Sentry Plus capabilities. Dual-Band ADS-B Traffic •... -
Page 15: Power Button
SENTRY PLUS Power Button Sentry Plus has a single power button located below the OLED display. OLED Display Power Button Sentry Plus LED Status Powering On/Off Press and hold the power button for two seconds to power the device on or off. Sentry Pilot’s Guide... -
Page 16: Led Status
SENTRY PLUS LED Status Sentry Plus has four LEDs that indicate system status: ADS-B, CO, and GPS LEDs activate when Sentry Plus is powered on. • PWR LED activates when Sentry Plus is charging or powered on. • If the PWR LED flashes blue, a charging error has occurred. To clear the error, •... -
Page 17: Oled Display
SENTRY PLUS OLED Display Sentry Plus is equipped with an OLED display that activates automatically when the device is powered on and remains on until powered off. OLED Startup & Brightness Adjustment At startup, a splash screen appears, displaying the Sentry logo and the installed firmware version. - Page 18 SENTRY PLUS OLED Views The Sentry Plus OLED display provides four views, each displaying real-time data. Press the power button to cycle between views. Acceleration View Displays real-time accelerometer data on the pitch • axis. When the aircraft is straight and level, acceleration •...
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Page 19: Battery
SENTRY PLUS Battery Sentry Plus is equipped with a rechargeable battery designed to provide up to 18 hours of use on a full charge. The battery is not replaceable. Battery Charge Level When Sentry Plus is powered on, the battery percentage is displayed in the top left corner of the OLED screen. -
Page 20: Auto Power
SENTRY PLUS Auto Power Sentry Plus includes an Auto Power setting that allows it to turn on and off automatically based on power source availability. If Auto Power is enabled, Sentry Plus automatically turns on when plugged in and turns off when the power source is removed, provided that GPS groundspeed is less than 10 knots for 45 seconds. - Page 21 SENTRY PLUS Shutdown After Inactivity Sentry Plus includes a Shutdown After Inactivity setting, which automatically powers off the device 30 minutes after disconnecting from ForeFlight, unless it remains connected to a power source. By default, Shutdown After Inactivity is disabled. To enable it: 1.
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Page 22: Connectivity
SENTRY PLUS Connectivity When powered on, Sentry Plus automatically creates a wireless network that can connect up to five devices simultaneously. By default, the network does not have a password. To connect an iPad or iPhone to the Sentry Plus: 1. - Page 23 SENTRY PLUS Sentry Plus Network Name (SSID) The default Sentry Plus wireless network name is a generic identifier (e.g., SentryPlus_12AB). The network name can be customized. Customizing the Network Name (SSID) To change the Sentry Plus network name: 1. Open ForeFlight Mobile. 2.
- Page 24 SENTRY PLUS Hiding the SSID Broadcast To prevent other devices from discovering the Sentry Plus network, disable SSID broadcast: 1. Open ForeFlight Mobile. 2. Navigate to More > Devices. 3. Tap the Sentry Plus device tile. 4. Toggle SSID Broadcast Off. If the SSID broadcast is disabled, previously connected devices will automatically reconnect when Sentry Plus is powered on if Auto-Join is enabled in iPad or iPhone Settings >...
- Page 25 SENTRY PLUS WPA2 Passcode Security By default, Sentry Plus does not have a passcode. A WPA2 passcode can be assigned from the Devices view. Assigning a WPA2 Passcode To assign a passcode: 1. Open ForeFlight Mobile. 2. Navigate to More > Devices. 3.
- Page 26 SENTRY PLUS Resetting the Passcode without the Passcode If WPA2 security is enabled and the passcode is forgotten or prevents a successful connection, a factory reset is required to remove the passcode and restore Sentry Plus to its default settings. To perform a factory reset: 1.
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Page 27: Wi-Fi Client Support
SENTRY PLUS Wi-Fi Client Support Sentry Plus can join an aircraft wireless network and provide data through the network, allowing ForeFlight Mobile to receive data from both Sentry Plus and the aircraft’s Wi- Fi simultaneously. Once connected, Sentry Plus will remember the aircraft network and automatically join when powered on. - Page 28 SENTRY PLUS Simultaneous Data Feeds When the Sentry Plus is connected to an aircraft Wi-Fi network (e.g., Satcom Direct, GoGo), ForeFlight can receive data from both the Sentry Plus and the aircraft network simultaneously. Data Considerations The data that ForeFlight can send or receive depends on the aircraft’s network settings.
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Page 29: Accelerometer (G-Load)
SENTRY PLUS Accelerometer (g-Load) Sentry Plus is equipped with an accelerometer that detects loads placed on the pitch axis during flight. Real-time accelerometer data can be viewed on the OLED screen and in the ForeFlight Mobile instrument panel. Accelerometer Data G-Meter ForeFlight Mobile Instrument Panel Sentry Pilot’s Guide... - Page 30 SENTRY PLUS g-Load in Track Logs Track Logs recorded with Sentry Plus or ForeFlight Mobile while connected to Sentry Plus include g-Load data, which is recorded at 1 Hz (once per second). To display g-Load in a Track Log: 1. Open the Track Log in ForeFlight Mobile. 2.
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Page 31: Flight Data Recorder (Track Logs)
SENTRY PLUS Flight Data Recorder (Track Logs) Sentry Plus features an integrated Flight Data Recorder that automatically captures track, altitude, attitude, groundspeed, and g-load data at 1 Hz (once per second) for every flight. The captured data is stored as Track Logs. Tap Info for Max g-Load data Track Log... - Page 32 SENTRY PLUS Automatic Track Log Recording The Flight Data Recorder automatically starts a Track Log each time Sentry Plus is powered on and records continuously until the device is powered off. There is no indication that a Track Log recording has started. Up to 16 Track Logs are stored in internal memory.
- Page 33 SENTRY PLUS Alternative Manual Import Method Track Logs can also be imported through the Devices menu. To do this: 1. Open ForeFlight Mobile while connected to Sentry Plus. 2. Navigate to More > Devices. 3. Select the Sentry Plus device tile. 4.
- Page 34 SENTRY PLUS Automatically Importing Track Logs into ForeFlight Mobile ForeFlight can automatically import Track Logs from Sentry Plus when all of the following conditions are met: Sentry Plus is powered on. • Sentry Plus is connected to ForeFlight. • The Automatic Track Log Import setting is enabled in ForeFlight Mobile. •...
- Page 35 SENTRY PLUS Track Log Sync When Sync is enabled, Track Logs imported from Sentry Plus automatically appear on all devices signed into the same ForeFlight account. To enable Sync in ForeFlight Mobile: 1. Go to More. 2. Tap Settings. 3. Enable Sync Data To/From Device. Deleting Track Logs Track Logs can be deleted from both ForeFlight Mobile and Sentry Plus.
- Page 36 SENTRY PLUS Deleting a ForeFlight Track Log Recorded with Sentry Plus Deleting a Track Log from ForeFlight Mobile does not delete it from Sentry Plus. Track Logs recorded with Sentry Plus that are imported and later deleted from ForeFlight may be able to be imported again, provided that the Track Log has not been overwritten.
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Page 37: Flarm Traffic
SENTRY PLUS FLARM Traffic FLARM is a collision avoidance technology used in Europe. Sentry Plus includes a built-in FLARM receiver that enhances traffic awareness for general aviation and light aircraft. FLARM Frequency FLARM operates on different frequencies depending on the region. The FLARM receiver in Sentry Plus is designed to operate on the European FLARM SRD860 frequency band (868.2 MHz to 868.4 MHz). -
Page 38: Sentry
SENTRY Sentry is the original ADS-B receiver designed for ForeFlight, providing real-time weather, traffic, GPS, and more. Its built-in rechargeable battery offers up to 12 hours of use on a single charge. Sentry creates a wireless network that allows up to five devices to connect simultaneously. -
Page 39: Power Button
SENTRY Power Button Sentry has a single power button located at the center of the device. Press and hold the button for approximately two seconds to power the Sentry on or off. LEDs The Sentry LEDs provide status information and have adjustable brightness settings. LED Brightness Control To adjust LED brightness in Sentry settings: 1. - Page 40 SENTRY LED Status Sentry has four LEDs that indicate system status. The following LEDs activate when Sentry is powered on: ADS-B, CO, and GPS LEDs - Indicate the status of ADS-B reception, carbon • monoxide detection, and GPS accuracy. PWR LED - Illuminates when Sentry is powered on or charging. •...
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Page 41: Battery
SENTRY Battery Sentry is equipped with a single rechargeable battery that is not designed to be removed or replaced. It supports USB 5V, 2A chargers exclusively and will not charge if connected to a power source that exceeds this specification. When charging, the PWR LED illuminates blue. -
Page 42: Connecting To Sentry
SENTRY Connecting to Sentry To connect an iPad or iPhone to the Sentry, follow these steps: 1. Power on Sentry by holding the power button for approximately two seconds. When powered on, Sentry creates a wireless network that supports up to five devices simultaneously. -
Page 43: Sentry Network Configuration
SENTRY Sentry Network Configuration The Sentry Wi-Fi network can be configured in the following ways: A unique network name (SSID) can be set • The network can be hidden • A WPA2 security passcode can be enabled. • Sentry Network Name (SSID) By default, the Sentry network name (SSID) is a generic identifier (e.g., Sentry_AV53). - Page 44 SENTRY Hiding Sentry’s Network To prevent Sentry from broadcasting its network, disable SSID broadcast. This hides the network from devices that have not previously connected to Sentry. Hiding the SSID Broadcast To hide the Sentry network: 1. Go to More > Devices. 2.
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Page 45: Wpa2 Security
SENTRY WPA2 Security By default, Sentry does not require a passcode. However, a WPA2 passcode can be assigned for network security. Assigning a Passcode To enable WPA2 security: 1. Go to More > Devices. 2. Tap the Sentry device tile. 3. -
Page 46: Sentry Mini
SENTRY MINI Sentry Mini is a compact ADS-B receiver measuring 3.3 x 2.3 x 0.6 inches and weighing 44 grams. It provides ForeFlight Mobile with real-time weather, traffic, and WAAS GPS. Sentry Mini is powered by a 5-volt portable or panel power source and creates a wireless network that supports up to five devices simultaneously. -
Page 47: Powering Sentry Mini
SENTRY MINI Powering Sentry Mini To power Sentry Mini, plug the provided USB-C cable into a 5V, 2A portable or aircraft power source. Sentry Mini does not have an internal battery and requires a continuous power connection. When powered on, the GPS and ADS-B LEDs illuminate, and Sentry Mini creates a wireless network. -
Page 48: Connecting To Sentry Mini
SENTRY MINI Connecting to Sentry Mini To connect an iPad or iPhone to a Sentry Mini: 1. Power on Sentry Mini by connecting it to a 5V, 2A power source. 2. Open the Settings app on the iPad or iPhone. 3. -
Page 49: Gps
Sentry, Sentry Mini, and Sentry Plus include an integrated WAAS GPS and can receive GNSS position data from GPS and GLONASS. GPS Accuracy GPS accuracy is determined by Sentry’s internal processor, which controls the GPS LED and sends accuracy data to ForeFlight for display in the Accuracy instrument. GPS LED Accuracy Indicators Each Sentry device has a front-facing GPS LED that automatically changes color based on GPS accuracy:... - Page 50 Displaying GPS Accuracy in ForeFlight When an accurate GPS signal is received from Sentry, the aircraft position is displayed on the ForeFlight Moving Map. The Accuracy instrument in ForeFlight provides real- time GPS accuracy data, with smaller values indicating greater precision. To display GPS accuracy in ForeFlight: 1.
- Page 51 Resolving Missing Aircraft Position on the Map A missing aircraft icon may result from poor GPS reception or device settings. Follow these steps to troubleshoot: Ensure Sentry has a clear view of the sky. • Verify Ownship Display settings: • 1.
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Page 52: Barometer
BAROMETER Sentry and Sentry Plus include an integrated barometer that provides ForeFlight Mobile with ambient air pressure data (uncorrected). This data is used to determine Pressure Altitude or Cabin Pressure within ForeFlight. Displaying Pressure Altitude To display pressure altitude in ForeFlight Mobile: 1. -
Page 53: Displaying Cabin Pressure
CARBON MONOXIDE Displaying Cabin Pressure ForeFlight can display cabin pressure for both pressurized and non-pressurized aircraft. To enable cabin pressure display: 1. Open the Maps view. 2. Tap the Instrument Panel button (airspeed indicator icon). 3. Tap the instrument at the bottom of the screen where the Cabin Pressure instrument will be displayed. -
Page 54: Ahrs
AHRS Sentry and Sentry Plus provide ForeFlight Mobile with an Attitude and Heading Reference System (AHRS). Attitude data is generated using a 3-axis accelerometer and a digital gyroscope. The backup attitude indicator in ForeFlight Mobile displays real-time attitude and GPS track information from Sentry. -
Page 55: Setting The Mounting Location For Sentry
AHRS Setting the Mounting Location for Sentry To provide accurate pitch and roll information, the mounting orientation of the Sentry must be set in ForeFlight Mobile. This is part of the initial setup process, which automatically appears when ForeFlight detects a new Sentry or Sentry Plus. Changing the Mounting Location To adjust the mounting location after the initial setup from within ForeFlight Mobile: 1. -
Page 56: Calibrating Ahrs
AHRS Calibrating AHRS Sentry and Sentry Plus AHRS can be calibrated automatically or manually. Calibration ensures that the backup attitude indicator displays a level horizon when the aircraft is straight and level. Automatic calibration is the recommended method. Automatically Calibrating AHRS To automatically calibrate Sentry or Sentry Plus AHRS in ForeFlight Mobile: 1. - Page 57 AHRS Manually Calibrating AHRS To manually calibrate AHRS in ForeFlight Mobile: 1. Open the Maps view. 2. Tap the Attitude Indicator button in the upper toolbar. 3. Tap the AHRS settings (gear) button near the bottom left corner of the screen.
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Page 58: Ads-B Traffic
ADS-B TRAFFIC ADS-B data is broadcast on either the 978 MHz or 1090 MHz frequency. 1090 MHz is required for operations internationally and above FL180. Sentry, Sentry Mini, and Sentry Plus are dual-band receivers capable of detecting traffic on both frequencies. Receiving ADS-B Traffic with Sentry Aircraft using Sentry do not need to be ADS-B Out equipped to receive traffic. -
Page 59: Traffic Icons
ADS-B TRAFFIC Traffic Icons Traffic icons in ForeFlight Mobile are displayed based on the following factors: Moving targets appear as arrowheads pointing in the direction of travel. • Stationary targets or targets with no direction or speed data appear as •... -
Page 60: Traffic Alerts
ADS-B TRAFFIC Traffic Altitude and Trend Indicators Relative altitude and position are displayed using the following elements: "+" for altitude above (e.g., +9 = 900 ft above). • "-" for altitude below (e.g., -9 = 900 ft below). • A TrafficTrend™ vector in front of an arrowhead shows the expected position in •... -
Page 61: Synthetic Vision
ADS-B TRAFFIC Synthetic Vision Traffic targets within 11 nm of a Sentry-equipped aircraft are displayed in the Synthetic Vision view when using ForeFlight Mobile version 10.2 or later. As traffic moves beyond 11 nm, it fades out of the display. As traffic moves closer, it increases in size. ADS-B traffic is depicted in Synthetic Vision, but tapping a target does not display a traffic information pop-up. - Page 62 ADS-B TRAFFIC When Hide Distant Traffic is enabled, traffic is removed from the map if it is: More than 15 nautical miles away, or • More than 3,500 ft above or below the current position. • To remove all traffic from the map, deselect the Traffic layer from the map layer menu in the upper left corner.
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Page 63: Traffic Information Service Broadcast (Tis-B)
ADS-B TRAFFIC Traffic Information Service Broadcast (TIS-B) The Traffic Information Service Broadcast (TIS-B) is a component of ADS-B traffic. The TIS-B broadcast includes non-ADS-B Out equipped traffic on the 978 MHz frequency. TIS-B is transmitted for the benefit of client aircraft, meaning it is only broadcast when an aircraft equipped with ADS-B Out is present. - Page 64 ADS-B TRAFFIC ADS-B Traffic Example In the example below: N123AA is included in the TIS-B broadcast because it is within 15 nm and 3,500 • ft of a client aircraft. N987ZZ is not included in the TIS-B broadcast because it is outside the 15 nm •...
- Page 65 ADS-B TRAFFIC How TIS-B is received TIS-B traffic is broadcast on the 978 MHz frequency and includes only Mode C transponder-equipped aircraft detected by surveillance radar within 15 nm and 3,500 ft of an ADS-B Out equipped aircraft. Air-to-air ADS-B broadcasts are not part of TIS-B. Pilots using a Sentry receiver within the service volume of an ADS-B ground station will receive TIS-B data for display in ForeFlight.
- Page 66 ADS-B TRAFFIC ADS-B Ownship ADS-B Ownship is the process of identifying a traffic target as the aircraft itself. ForeFlight determines Ownship by comparing the aircraft’s ADS-B Out data with Sentry GPS data, using location, speed, and heading. If the position data closely matches, ForeFlight assigns Ownship status and applies the following benefits: Traffic suppression –...
- Page 67 ADS-B TRAFFIC Ownship Detection via TIS-B If the aircraft does not have ADS-B Out, ForeFlight Mobile may still determine ownship status if: The aircraft is detected via TIS-B by being within 15 nm and 3,500 ft of an ADS- • B Out equipped aircraft.
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Page 68: Ads-B Weather
ADS-B WEATHER The Flight Information Service Broadcast (FIS-B), commonly known as ADS-B weather, is a continuous ground-based broadcast providing weather and NOTAM data. The FIS- B broadcast also includes ground station details such as latitude, longitude, tower type, and status. ForeFlight Mobile can display ADS-B weather, NOTAMs, and tower information when connected to Sentry, Sentry Mini, or Sentry Plus. -
Page 69: Ads-B Ground-Based Towers
ADS-B WEATHER ADS-B Ground-Based Towers Hundreds of towers throughout the United States broadcast FIS-B data. There are four types of FIS-B ground-based towers: surface, low-altitude, medium-altitude, and high- altitude. Each tower type provides a range of aeronautical information (see table in this chapter for additional details). - Page 70 ADS-B WEATHER ADS-B Tower Tier Look-Ahead Range Refer to the table below for weather product availability and broadcast range based on ADS-B tower tier. Surface Low-Altitude Medium- High-Altitude Weather Product Towers Tier Altitude Tier Tier CONUS NEXRAD Not Provided Entire CONUS 150 nm 200 nm 250 nm...
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Page 71: Weather Replay
ADS-B WEATHER Weather Replay All Sentry receivers have an integrated memory chip that stores up to 30 minutes of weather and NOTAM data. When powered on and receiving ADS-B data, Sentry automatically begins storing received information. Sentry automatically deletes data older than 30 minutes. Weather Replay improves load times by locally storing ADS-B data until a stored weather product is selected in ForeFlight Mobile. -
Page 72: Foreflight Pack
ADS-B WEATHER ForeFlight Pack ForeFlight Mobile can download charts, weather, NOTAMs, and fuel price information for an upcoming flight, allowing access to this data while en route. Packing requires an active internet connection and cannot be completed while connected to Sentry. It is recommended to Pack before heading to the aircraft. - Page 73 ADS-B WEATHER Packing with Sentry When packed for a flight and connected to Sentry, ForeFlight displays the latest available information. If METARs are packed before receiving FIS-B data, ForeFlight will show the stored METARs from the packing process. Once the flight departs and FIS-B data is received, ForeFlight automatically replaces the packed METARs with real-time FIS-B data from Sentry.
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Page 74: Conus And Regional Nexrad (Ads-B)
ADS-B WEATHER CONUS and Regional NEXRAD (ADS-B) Medium- and high-altitude FIS-B towers broadcast Next-Generation Radar (NEXRAD) for the Continental United States (CONUS). Regional NEXRAD, broadcast by all tower tiers, provides higher resolution and a faster refresh rate than CONUS NEXRAD. To display ADS-B NEXRAD data, select the Radar (ADS-B) map layer. -
Page 75: Animated Ads-B Radar
ADS-B WEATHER Animated ADS-B Radar When Radar (ADS-B) is selected, the animate (play) button appears to the left of the time slider at the bottom of the Maps view. ForeFlight will animate up to 15 frames of NEXRAD data, but the time slider and play button are removed if fewer than two radar frames are available. -
Page 76: Cloud Tops (Ads-B)
ADS-B WEATHER Cloud Tops (ADS-B) The Cloud Tops (ADS-B) weather layer is included with all subscriptions when connected to Sentry. This NWS forecast map layer derives cloud top estimates from satellite temperature sensors using the High-Resolution Rapid Refresh (HRRR) model. It is useful for determining whether a flight can be conducted in visual conditions above the clouds. -
Page 77: Icing (Ads-B)
ADS-B WEATHER Icing (ADS-B) The Icing (ADS-B) weather layer is included with all subscriptions when connected to Sentry. This NWS graphical forecast provides a look-ahead range of 150 to 250 nm and is available only in the continental United States. Forecast icing information is not available for Alaska, Hawaii, Guam, or Puerto Rico. -
Page 78: Turbulence (Ads-B)
ADS-B WEATHER Turbulence (ADS-B) The Turbulence (ADS-B) weather layer is included with all subscriptions when connected to a Sentry ADS-B receiver. This NWS forecast map layer provides a look- ahead range of 150 to 250 nm and is available only in the continental United States. Turbulence (ADS-B) displays the forecast Eddy Dissipation Rate (EDR), indicating turbulence intensity based on a medium-weight aircraft category. -
Page 79: Freezing Lvls (Ads-B)
ADS-B WEATHER Freezing Lvls (ADS-B) The Freezing Level (ADS-B) layer is included with all subscriptions when connected to Sentry. This map layer provides a graphical representation of freezing levels across North America, delineated by color-coded lines at 4,000 ft intervals (MSL) up to 24,000 ft (MSL). -
Page 80: Airmets, Sigmets, Cwas
ADS-B WEATHER AIRMETs, SIGMETs, CWAs ForeFlight combines AIRMETs, SIGMETs, and Center Weather Advisories (CWA) into a single map layer. When the AIR/SIGMET/CWAs map layer is selected, the individual weather products can be filtered with the buttons near the bottom of the map. Selected buttons (highlighted in blue) display the relevant advisories graphically on the map during their active period. -
Page 81: Pireps
ADS-B WEATHER PIREPs Pilot reports (PIREPs) are broadcast over ADS-B with a range of 250 nm, 375 nm, and 500 nm for low-, medium-, and high-altitude towers, respectively. PIREPs refresh automatically every 10 minutes in ForeFlight. When the PIREPs layer is active, reports are displayed graphically on the map. Tap a PIREP icon to view the coded and decoded text. -
Page 82: Lightning
ADS-B WEATHER Lightning The Lightning layer is included with all subscriptions when connected to Sentry. It provides a graphical representation of observed cloud-to-ground lightning strike location and density, updated every five minutes from the U.S. national lightning detection network. Lightning data is transmitted over FIS-B with a 150 to 250 nm look-ahead range. Tap a lightning icon to view the number of strikes within the given radius. -
Page 83: Metars
ADS-B WEATHER METARs All tower types transmit METARs, but low-altitude towers provide METAR data only for airports within 250 nm. When receiving data exclusively from low-altitude towers, ADS-B METAR data will not be available for airports beyond this range. METARs received via ADS-B can be viewed the same way as when connected to the internet. -
Page 84: Special Use Airspace (Sua)
ADS-B WEATHER Special Use Airspace (SUA) SUA includes designated areas for operations that may restrict non-participating aircraft, such as: Alert Areas • Controlled Firing Areas • Military Operations Areas • Prohibited Areas • Restricted Areas • Warning Areas. • SUA status is broadcast via the FIS-B NOTAM-D feed and displayed textually in ForeFlight Mobile under More >... - Page 85 ADS-B WEATHER Temporary Flight Restrictions (TFR) TFRs are issued via FDC NOTAM and temporarily restrict non-participating aircraft from specific airspace. TFRs from the past 30 days (with properly formatted graphical data) appear on the Maps view when the TFRs map layer is selected. TFRs are active or will be active within 8 hours.
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Page 86: Winds & Temperatures Aloft
ADS-B WEATHER Winds & Temperatures Aloft Winds & Temperatures Aloft are broadcast via FIS-B with a look-ahead range of up to 1,000 nm and are available with all subscriptions when connected to Sentry. To view Winds & Temperatures Aloft, tap an airport icon and select Weather > Winds. FIS-B Winds &... -
Page 87: Carbon Monoxide
CARBON MONOXIDE Sentry and Sentry Plus feature an electronic CO sensor that continuously monitors CO levels. If dangerous levels are detected, in-app visual and audible alerts are triggered. The sensor has a 10-year lifespan and is non-replaceable. CO LEDs CO LEDs Sentry and Sentry Plus have three LEDs, with the middle LED indicating CO concentration: Normal: CO level is below 75 PPM. -
Page 88: Alarms
CARBON MONOXIDE Alarms Sentry and Sentry Plus have built-in carbon monoxide alarms. When CO levels become dangerous: The CO LED turns red. • An in-app notification appears. • An audible alert plays on the iOS device. • The Sentry alarm activates. •... -
Page 89: Troubleshooting
TROUBLESHOOTING Sentry Plus Refer to the table below for troubleshooting issues with the Sentry Plus. Symptoms Solutions Will not acquire GPS signal Place in a location with a clear view of the • sky for a few hours to acquire a signal. Perform a factory reset. -
Page 90: Sentry
TROUBLESHOOTING Sentry Refer to the table below for troubleshooting issues with the Sentry. Symptoms Solutions Will not acquire GPS signal Place in a location with a clear view of the • sky for a few hours to acquire a signal. Perform a factory reset. -
Page 91: Sentry Mini
TROUBLESHOOTING Sentry Mini Refer to the table below for troubleshooting issues with the Sentry Mini. Symptoms Solutions Will not acquire GPS signal Place outside with a clear sky view for a few • hours to acquire a signal. Perform a factory reset. •... -
Page 92: Change History
CHANGE HISTORY Version Date Change Summary March 2025 • General Content review and revision • Addition of troubleshooting tables September 2024 • Updated warranty information page • Updated features table • Updated Sentry dimensions • Minor edits and chapter reorganization August 2023 •... - Page 93 ForeFlight, LLC 2323 S Shepherd Dr, Houston, TX 77019 www.foreflight.com...
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