For the second time in two weeks, air traffic controllers directing planes into the Newark, New Jersey, airport briefly lost their radar. The outages have sparked travel chaos, with hundreds of flight delays and cancellations after the FAA slowed air traffic to ensure safety.
The country's aging air traffic control system is in the spotlight. Media, politicians and the public are demanding both solutions for the system and answers on how safe traveling is at the moment. To provide insight, Florida Tech's Margaret Wallace is lending her expert opinion and perspective on the issue.
Margaret Wallace is Assistant Professor of Aviation Management at Florida Institute of Technology, where she teaches Air Traffic Control and Airport Management courses. She spent over 15 years in the industry prior to teaching as an Airport Manager (4 years) at Ramstein Air Base in Germany and an Air Traffic Controller (10+ years) in the U.S. Air Force. “The recent communication failure at Newark Liberty International Airport has raised serious concerns about the safety and dependability of air traffic control systems in the United States. On April 28, 2025, the Newark air traffic facilities lost all radio communication with approximately 20 airplanes for up to 90 seconds due to an equipment breakdown. During the outage, pilots and controllers were unable to communicate. Controllers were unable to maintain aircraft separation during crucial flight phases, and pilots were unable to receive air traffic clearances and instructions. Situations like this, as well as aircraft incidents, bring stress and trauma to the controller's mental state. Most people cannot fathom how much mental stress the controller experiences in everyday job settings. Situations with defective equipment, combined with lengthy work hours due to a scarcity of controllers, appear to have taken their toll based on the fact that several controllers have taken leave for mental stress. This situation posed a safety risk to all planes and passengers. Fortunately, there were no incidents, and everyone remained safe. However, this demonstrated some of the flaws in the outdated air traffic system equipment. Sean Duffy, the new Transportation Secretary, has acknowledged the critical need to improve our current technology. While air travel is generally safe, our current administration must continue to prioritize the upgrade of air traffic systems and increasing the staffing in air traffic facilities. To ensure safety, I believe we should consider having airlines restrict the number of flights available and the Air Route Traffic Command Center to introduce delays to avoid overloading the system.” Margaret Wallace If you're interested in connecting with Margaret Wallace about the ongoing issues at airports across the country, let us help. Contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology, at adam@fit.edu to arrange an interview today.
A Florida Tech-led group of researchers was selected to help NASA solve challenges in aviation through its prestigious University Leadership Initiative (ULI) program. Over the next three years, associate professor of computer science and software engineering Siddhartha Bhattacharyya and professor of aviation human factors Meredith Carroll will work to understand the vital role of trust in autonomy.
Their project, “Trustworthy Resilient Autonomous Agents for Safe City Transportation in the Evolving New Decade” (TRANSCEND), aims to establish a common framework for engineers and human operators to determine the trustworthiness of machine-learning-enabled autonomous aviation safety systems.
Autonomous systems are those that can perform independent tasks without requiring human control. The autonomy of these systems is expected to be enhanced with intelligence gained from machine learning. As a result, intelligence-based software is expected to be increasingly used in airplanes and drones. It may also be utilized in airports and to manage air traffic in the future.
Learning-enabled autonomous technology can also act as contingency management when used in safety applications, proactively addressing potential disruptions and unexpected aviation events.
TRANSCEND was one of three projects chosen for the latest ULI awards. The others hail from Embry-Riddle Aeronautical University in Daytona Beach – researching continuously updating, self-diagnostic vehicle health management to enhance the safety and reliability of Advanced Air Mobility vehicles – and University of Colorado Boulder – investigating tools for understanding and leveraging the complex communications environment of collaborative, autonomous airspace systems.
Florida Tech’s team includes nine faculty members from five universities: Penn State; North Carolina A&T State University; University of Florida; Stanford University; Santa Fe College. It also involves the companies Collins Aerospace in Cedar Rapids, Iowa and ResilienX of Syracuse, New York. Carroll and Bhattacharyya will also involve students throughout the project.
Human operators are an essential component of aviation technology – they monitor independent software systems and associated data and intervene when those systems fail. They may include flight crew members, air traffic controllers, maintenance personnel or safety staff monitoring overall system safety.
A challenge in implementing independent software is that engineers and operators have different interpretations of what makes a system “trustworthy,” Carroll and Bhattacharyya explained. Engineers who develop autonomous software measure trustworthiness by the system’s ability to perform as designed. Human operators, however, trust and rely on systems to perform as they expect – they want to feel comfortable relying on a system to make an aeronautical decision in flight, such as how to avoid a traffic conflict or a weather event. Sometimes, that reliance won’t align with design specifications.
Equally important, operators also need to trust that the software will alert them when it needs a human to take over. This may happen if the algorithm driving the software encounters a scenario it wasn’t trained for.
“We are looking at how we can integrate trust from different communities – from human factors, from formal methods, from autonomy, from AI…” Bhattacharyya said. “How do we convey assumptions for trust, from design time to operation, as the intelligent systems are being deployed, so that we can trust them and know when they’re going to fail, especially those that are learning-enabled, meaning they adapt based on machine learning algorithms?” With Bhattacharyya leading the engineering side and Carroll leading the human factors side, the research group will begin bridging the trust gap by integrating theories, principles, methods, measures, visualizations, explainability and practices from different domains – this will build the TRANSCEND framework. Then, they’ll test the framework using a diverse range of tools, flight simulators and intelligent decision-making to demonstrate trustworthiness in practice. This and other data will help them develop a safety case toolkit of guidelines for development processes, recommendations and suggested safety measures for engineers to reference when designing “trustworthy,” learning-enabled autonomous systems.
Ultimately, Bhattacharyya and Carroll hope their toolkit will lay the groundwork for a future learning-enabled autonomous systems certification process.
“The goal is to combine all our research capabilities and pull together a unified story that outputs unified products to the industry,” Carroll said. “We want products for the industry to utilize when implementing learning-enabled autonomy for more effective safety management systems.” The researchers also plan to use this toolkit to teach future engineers about the nuances of trust in the products they develop. Once developed, they will hold outreach events, such as lectures and camps, for STEM-minded students in the community.
If you're interested in connecting with Meredith Carroll or Siddhartha Bhattacharyya - simply click on the expert's profile or contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology at adam@fit.edu to arrange an interview today.
When Luis Quiroga-Nuñez, Ph.D was appointed director of Florida Tech’s Ortega Observatory and its primary tenant – a non-functioning, 32-inch telescope – in 2023, he decided it was time to provide astronomy students and others a window to space.
The observatory is already a base for research across a spectrum of cosmic exploration through disciplines such as astronomy and astrophysics, heliophysics, planetary science and astrobiology. However, current students have yet to see the stars up close, as the aging telescope, commissioned in 2008, has sat dormant for the last several years.
With restoration, the telescope could be a powerful tool to train students to use professional telescopes and make observations – critical skills that will help prepare them for their future careers.
It soon became apparent, however, that this was no simple task. The restoration would necessitate reverse engineering on a large scale to even understand how to fix and upgrade the telescope, much less actually repair it. It would also, as Quiroga-Nuñez wisely recognized, be its own powerful educational opportunity, providing unique hands-on learning opportunities for students in the College of Engineering and Science.
“We are an institute of technology. We have perfectly capable people, like these young students, ready to join hands-on projects, get crazy and start to be creative.” Luis Quiroga-Nuñez With various issues to tackle and eager to support home-grown expertise, Quiroga-Nuñez and Lee Caraway, Ph.D, an instructor in the department of electrical engineering and computer science, recruited students with varied backgrounds, from astronomy to electrical engineering and computer science. Students could apply what they learned in class and grow their portfolios with a real-world project, the sort of experiential learning that is a hallmark of a Florida Tech education.
Some improvements have been made, but the project remains an exciting puzzle for students and faculty alike. Here’s how they are doing it.
An Interdisciplinary Project In January 2023, Quiroga-Nuñez partnered with Caraway to rebuild the telescope from the inside out. They say the conversation started over lunch, sketching ideas on a napkin.
With various issues to tackle and eager to support home-grown expertise, Caraway and Quiroga-Nuñez recruited students with varied backgrounds, from astronomy to engineering to computer science.
“This is about as real-world as you can get without leaving school. We have this giant piece of technology that is not working. Figure out why,” said recent graduate Adrianna Agustin ’24, who helped update the telescope’s communication system. “All of those problem-solving skills will directly translate to wherever we go in the future.” The project’s multidisciplinary nature also boosts collaboration between both sides of the college.
“We keep integrating different parts of the university and involving students in a project that we were blinded by,” Quiroga-Nuñez says. “We sit between the scientists and the engineers.” And there’s no shortage of tasks. In addition to the refurbishment, Quiroga-Nuñez and Caraway are also completing routine telescope maintenance, with students taking on adjacent projects around the observatory.
With the telescope repair, each student is given their own task, such as redesigning a small clip that supports the dome’s electric current, reviewing the conditions of the finder’s lens or understanding how analog devices control the telescope’s focus. This allocation allows each student to claim their own individual contribution to the greater telescope puzzle.
Opening a Time Capsule The telescope’s biggest issues were mechanical and electrical, all exacerbated by age.
Its motors were decades old and naturally failing, Caraway said. These motors controlled the telescope’s right ascension and declination – essentially, its ability to move. The chaotic interior also involved multiple individual systems with dozens of wires.
And the circuits controlling the motors, which dated back to the 1980s, were also failing due to age. As Caraway noted, his students are sweeping off “dust older than them.”
“The technology back then simply did not exist to control the motors, run the diagnostics and make it all happen,” Caraway explained. “They’re not designed to run 30 years.” Additionally, the computer program that controlled the motors was outdated and did not meet to the university’s security requirements.
Given all this, the team needed to develop a new communication system for the telescope, starting with the computer software. They decided instead of purchasing an upgraded computer system, they could build and program their own in-house from scratch.
Next, once the new computer was up and running, it needed motors to command. Marisa Guerra ’24 worked on a senior design project involving a robotic arm whose motor structure was the same as the telescope’s. She crafted a blueprint for the telescope’s new motors using what she learned for her capstone project.
At the same time, Agustin worked on developing a cleaner communication system between the computer to the motors. Her senior design research focused on electric vehicles and their internal circuit systems, and she could replicate something similar within the telescope – but not without digging through the decaying electronics first.
“We had to reverse engineer and actually redraw the circuits, which was good practice because a lot of the time, for senior design at least, you don’t really have to design a new circuit. You are just kind of puzzle-piecing it together,” Agustin said. “But with this circuit, all of them were bad.” Using Guerra’s and Agustin’s senior design research, the team reprogrammed the telescope’s circuits. What once took 20 wires to operate now only takes two. They also reduced the weight of the telescope’s motors from 40 pounds to just 2 pounds.
Once the communication system was finished, the team was just waiting for mobility. And on a day in Spring 2024, thanks to the refurbished system, they were able to create movement within the telescope for the first time in years.
“I didn’t even know if that device could move internally,” Quiroga-Nuñez says. The moment was celebrated, but the team knew this success triggered a new challenge. It was time to tackle high astrometric precision – a crucial element of properly tracking movement in space.
“We are pointing to tiny points in the sky. If we do not track that properly, we are going to be lost in the universe,” Quiroga-Nuñez says. The Value of Time Perfecting precise movement is expected to take some time, but that’s not a bad thing, Quiroga-Nuñez says. He believes that a lengthy timeline will offer more value in the long run because it will give even more students a chance to get involved. Besides, its primary purpose will be to teach students how to use a telescope and allow them to make observations and prepare for their future careers.
Ultimately, Quiroga-Nuñez predicts that the telescope could pick up its first image from space in about a year if everything stays on track. However, the team still has a lot of ground within the telescope to uncover, with an unpredictable number of potential troubleshooting challenges.
For example, while rebuilding the motor, they discovered that the internal mirror that illuminates the telescope’s visuals was in poor condition – it needed cleaning and new aluminum to reflect enough light to see the telescope’s imagery, Agustin explains. So, the team had to remove the mirror and ship it to New York for refurbishment – a process that took several months. Once the mirror is reinstalled, they can return to their quest for better precision.
The mirror is just one example of unpredictability in reverse-engineering. Ultimately, dedicating more time to understanding and solving the unforeseen challenges allows more students to participate in the telescope’s journey, Quiroga-Nuñez says.
“This is like a big Lego for them,” he says. “They are learning the process, and the students, I think, will have found a very valuable life experience.” If you're interested in connecting with Luis Quiroga-Nuñez, director of Florida Tech’s Ortega Observatory - simply contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology at adam@fit.edu to arrange an interview today.
