
Vigilant Aerospace Systems has launched the FlightHorizon™ ALERT service, an easy-to-use, fully managed airspace awareness and alerting system for general aviation airports, critical infrastructure and any facility that needs better awareness of nearby aircraft and drones.
The new service is designed to be easy to install, easy to use, and affordable for smaller facilities and general aviation airports. The system uses a single receiver box to detect both aircraft and drones and display them in a 3D moving map on the web. The system also sends text messages or an email when an aircraft or drone is nearby. The alert includes a link to an instant replay of the aircraft on a 3D map.
All air traffic is logged and flight visualization, reporting and analysis tools are provided in the web application.
FlightHorizon ALERT gives airport managers or facility personnel a simple way to see what is flying nearby on a web map, receive automatic text alerts and review what happened after the alert.
The system is especially suited for monitoring low-altitude airspace around runways, approach surfaces and zones, ramps, perimeters, facility or campus restricted areas, industrial sites and other locations where unexpected aircraft or drone activity may require attention.
Leveraging Vigilant’s success building the FlightHorizon airspace management system at the Infinity One Spaceport in western Oklahoma and at Gorman Field in Grand Forks, North Dakota, the new service brings best practices for airspace awareness to airports and facilities of any size.
How It Works

FlightHorizon ALERT is an online service for a single monthly fee that includes the hardware required to monitor aircraft and drones at any location.
Leveraging software developed by Vigilant for the US Air Force and using two licensed NASA patents, the new service uses low-cost technology to provide a simple, all-in-one detection, tracking, alerting and logging system.
Once plugged into power and internet, the system begins displaying air traffic in real time on your web browser and phone, logging the air traffic and sending alerts about nearby flights via text message and email.
The system works by tracking and logging aircraft transponders (ADS-B) and drone beacons (Remote ID), which are required on all drones flown in the United States weighing more than 250 grams.
Know What Happened With One-Click Replay
Every alert includes a secure replay link. With one click, the event can be reviewed from the beginning. The replay on the web map shows where the aircraft or drone entered the alert zone, how fast it was moving, where it went, and any beacon ID. This makes it easier to understand the event, document what happened, and decide whether follow-up is needed.
Instead of relying only on reports from pilots, personnel, or the public, airports and other facilities can use actual data logs to assess activity and incidents.


Fast, Plug-and-Play Setup
FlightHorizon ALERT is designed for fast deployment. The box and antennas are pre-configured for your site and delivered to you for you to install on a building or hanger. Vigilant helps you to submit the required FAA form to install the antennas.
Locations without easy internet access can opt for cellular or Starlink satellite connectivity. Larger facilities can connect multiple nodes to cover larger areas, which all feed data to your account.
The system is fully managed at Vigilant’s central data center by qualified support staff. All software and services are automatically monitored.
Ordering is easy:
- Go to www.FlightHorizonAlert.com and fill out the subscription form.
- If the unit is for an airport, we will guide you through the single required FAA form.
- Wait for your unit to arrive.
Setup is simple:
- Mount the weather-rated outdoor unit in an elevated location free from obstructions, like a building or hanger roof.
- Connect power and an ethernet cable or wifi connection
- Open any web browser, log in with your secure link and start getting alerts for airspace activity.
That’s the entire process. Sign up for FlightHorizon ALERT today!
