Regulations & Safety
US Lawmakers Propose Ending 52-Year Supersonic Flight Ban Over Land
Legislation seeks to modernize FAA rules for supersonic aviation using NASA and private-sector tech, addressing global competition and environmental concerns.
Lawmakers Push to Lift 52-Year Ban on Supersonic Flights Over Land
After more than half a century of silence at supersonic speeds over U.S. territory, lawmakers are proposing a dramatic policy shift that could redefine the future of high-speed civilian aviation. The Supersonic Aviation Modernization Act (SAM), introduced in May 2025, aims to repeal the 1973 Federal Aviation Administration (FAA) regulation that prohibits nonmilitary aircraft from exceeding Mach 1 over land. This move comes as a response to significant advancements in aerospace engineering, particularly in “quiet supersonic” technologies designed to mitigate the disruptive sonic booms that led to the original ban.
The proposed legislation is not just about speed, it’s about positioning the United States at the forefront of global aerospace innovation. With countries like China already investing heavily in next-generation supersonic platforms, U.S. lawmakers argue that maintaining the outdated ban could leave American manufacturers at a strategic disadvantage. In this context, the SAM Act represents a calculated attempt to modernize aviation policy while balancing environmental, economic, and public safety concerns.
As the debate unfolds, stakeholders from government agencies, private industry, environmental organizations, and the general public are weighing in on what could be a defining moment for commercial aviation in the 21st century.
Historical Background: Why the Ban Exists
The Origins of the 1973 Supersonic Flight Ban
The FAA’s 1973 ban on civilian supersonic flight over land, codified in 14 CFR §91.817, was a direct response to widespread public concern over sonic booms. These shockwaves, generated when an aircraft exceeds the speed of sound (approximately 767 mph at sea level), were not only loud but also capable of causing structural damage. During NASA’s 1964 sonic boom tests over Oklahoma City, 72% of residents reported being disturbed by the noise, and 4.3% claimed property damage.
While military aircraft continued to fly supersonically under restricted conditions, commercial ventures like the Concorde were limited to subsonic speeds over land. This restriction severely hampered the Concorde’s commercial viability, as it could not fully exploit its speed advantage on many routes. Environmental concerns, including high-altitude emissions and potential ozone layer depletion, further contributed to the public’s skepticism about supersonic travel.
In effect, the ban created a regulatory environment that discouraged innovation in supersonic aviation for decades. Only now, with significant technological advancements, is the conversation shifting back toward reconsidering these restrictions.
Economic and Strategic Implications
Supporters of the SAM Act argue that the ban has placed the U.S. at a competitive disadvantage in the global aerospace market. With the global supersonic aviation market projected to reach $70.54 billion by 2034, the stakes are high. Private companies such as Boom Supersonic have already invested heavily in research and infrastructure, including a $100 million manufacturing facility in North Carolina expected to create 1,700 jobs by 2030.
Internationally, competition is heating up. China’s COMAC C949 and Lingkong Tianxing’s Cuantianhou projects are pushing the boundaries of supersonic and suborbital flight, with ambitions to halve transcontinental travel times. These developments underscore the urgency for the U.S. to modernize its regulatory framework to keep pace with global innovation.
Senator Ted Budd and Representative Troy Nehls, the bill’s sponsors, have emphasized that the U.S. must not fall behind in this new aerospace race. “To maintain our global leadership in aerospace innovation, we must modernize air travel by lifting the outdated ban on civil supersonic flight,” Budd stated.
“The race for supersonic dominance between the U.S. and China is already underway and the stakes couldn’t be higher, ” Senator Ted Budd
Technological Advances: Making Quiet Supersonics a Reality
NASA’s X-59 QueSST: Reducing the Boom
NASA‘s X-59 Quiet SuperSonic Technology (QueSST) aircraft is a cornerstone of the current push to lift the ban. Designed to reduce the traditional sonic boom to a “sonic thump” of around 75 perceived loudness decibels (PLdB)—roughly equivalent to a car door closing—the X-59 leverages advanced aerodynamics and a 99.7-foot elongated fuselage to disperse shockwaves laterally. (space.com)
NASA plans to conduct community overflight tests between 2026 and 2027 to assess public tolerance for these quieter sonic events. The data collected will be submitted to the FAA by 2028 to inform future regulatory decisions. These efforts aim to replace the current speed-based restrictions with noise-based standards that reflect modern capabilities. (nasa.gov)
According to Larry Cliatt, NASA’s acoustics lead for the QueSST project, “We expect the X-59 sonic thump to be as low as about 75 perceived loudness decibels. That is a lot quieter than the Concorde, which was over 100 perceived loudness decibels.” (nasa.gov)
Boom Supersonic’s XB-1 and Overture
Private industry is also making significant strides. Boom Supersonic’s XB-1 demonstrator aircraft achieved Mach 1.3 in January 2025. By flying at altitudes around 60,000 feet and using the Mach cutoff effect, the XB-1 prevents shockwaves from reaching the ground, effectively eliminating the audible boom.
Boom’s next project, the Overture, is designed to travel at Mach 1.7 and aims to enter commercial service by the end of the decade. The aircraft will use similar boom-mitigation strategies and is being developed with sustainability in mind, including the use of sustainable aviation fuels (SAFs).
Blake Scholl, CEO of Boom Supersonic, views the SAM Act as a pivotal opportunity: “This is our Sputnik moment. If we don’t lead, someone else will.”
Environmental and Regulatory Considerations
Climate Impact and Emissions
Despite the progress in noise reduction, environmental concerns remain a significant hurdle. Supersonic aircraft typically operate at higher altitudes, where emissions such as nitrogen oxides (NOx) can have a greater impact on the ozone layer. Additionally, these aircraft tend to emit more CO2 per passenger-mile than subsonic jets.
NASA estimates that the X-59’s engines will emit approximately 20% more CO2 per passenger-mile. The International Council on Clean Transportation (ICCT) has warned that a fleet of 2,000 supersonic aircraft could contribute up to 0.1 gigatons of CO2 annually—about 1% of global aviation emissions.
To address these concerns, the International Civil Aviation Organization (ICAO) introduced new noise and emissions standards in 2025. However, enforcement across jurisdictions remains inconsistent, raising questions about the global viability of supersonic travel.
Public Acceptance and Legal Framework
Even with quieter technology, gaining public acceptance is not guaranteed. NASA’s upcoming community response surveys will play a critical role in determining whether the public is ready to embrace supersonic flight once again. The FAA must also ensure compliance with the Aviation Safety and Noise Abatement Act, which defines 65 decibels as the threshold for significant noise.
From a legal standpoint, the FAA has the authority under 49 U.S.C. §44715 to revise noise regulations, but any changes must be justified through cost-benefit analyses that consider both economic and public welfare impacts. This means that even if the technology is ready, regulatory approval could still face delays.
Balancing innovation with environmental and social responsibility will be crucial as the FAA considers how to implement the SAM Act, should it pass into law.
Conclusion: A New Era of High-Speed Travel?
The proposed repeal of the 1973 supersonic flight ban marks a turning point in U.S. aviation policy. With the convergence of technological readiness, legislative momentum, and growing international competition, the time may be ripe for a new chapter in commercial air travel. However, this transition will require careful navigation of environmental, regulatory, and societal concerns.
Ultimately, the success of supersonic aviation in the 21st century will depend on three pillars: establishing robust noise certification standards, investing in sustainable propulsion technologies, and fostering international regulatory alignment. If these challenges can be met, the dream of quiet, fast, and efficient air travel over land could soon become a reality.
FAQ
What is the Supersonic Aviation Modernization Act?
It’s a proposed U.S. law that would instruct the FAA to revise its ban on civilian supersonic flight over land, provided no sonic booms reach the ground.
Why was supersonic flight banned in the first place?
The FAA banned it in 1973 due to concerns over loud sonic booms and property damage caused by shockwaves from aircraft breaking the sound barrier.
What are “quiet supersonic” technologies?
These are engineering innovations that reduce or eliminate the audible sonic boom, often through aircraft design and flight altitude strategies.
Is supersonic flight environmentally friendly?
Not yet. Supersonic aircraft typically emit more CO2 and NOx than subsonic planes, but ongoing research aims to mitigate these impacts through sustainable fuels and engine efficiency.
When could we see commercial supersonic flights over land?
If the SAM Act passes and FAA regulations are updated, commercial operations could begin in the late 2020s, pending aircraft certification and public acceptance.
Sources
Photo Credit: BoomSupersonic
Regulations & Safety
NTSB Preliminary Report: Ryanair 737-800 Engine Failure
NTSB confirms fan-blade-out on Ryanair 737-800 shattered cabin window, partially ejecting a passenger during climb from Thessaloniki.
This is a developing story. Information may change as official details are released.
This is original reporting and analysis by AirPro News.
On August 13, 2026, the National Transportation Safety Board (NTSB) issued its preliminary report on a July 10 uncontained engine failure aboard a Ryanair Boeing 737-800, confirming that a fan-blade-out event shattered a cabin window and caused a rapid decompression. The incident resulted in a 61-year-old male passenger being partially pulled through the shattered window before being secured by fellow passengers.
The event occurred during climb out from Thessaloniki International Airport (SKG) in Greece. The flight, operated by Ryanair subsidiary Malta Air, was bound for Memmingen, Germany (FMM). The NTSB is currently investigating potential similarities between this event and a fatal 2018 engine failure, while the agency has also publicly addressed premature speculation regarding the cause by Ryanair leadership.
Flight 1879 rapid decompression
According to the NTSB preliminary report, the Boeing 737-800 was climbing when the right-hand CFM56-7B engine experienced a fan-blade-out event. Debris from the engine struck the fuselage and shattered a window at row 11. The resulting rapid decompression pulled a passenger partially outside the aircraft. The passenger sustained neck and shoulder injuries as well as friction burns, but no fatalities occurred.
Reporting by The Air Current indicates the failure happened at an altitude of approximately 15,000 feet. Passengers described a sudden and violent disruption to the flight. A passenger told AP News that the cabin was quiet before a loud noise resembling a bursting tire occurred, adding that they knew immediately the aircraft had lost pressure due to the sudden loss of altitude.
Initial reports following the July 10 incident suggested the failure occurred in the airspace of the Republic of North Macedonia. However, flight path analysis confirmed the event took place in Greek airspace. The Hellenic Air and Rail Safety Investigation Authority officially delegated the investigation to the NTSB on July 16, 2026.
Maintenance history and preliminary findings
The NTSB preliminary report notes that bird remains were found inside the damaged engine. Flight crews had reported four suspected bird strikes to the aircraft’s number two engine in the 12 months preceding the accident. The report states that bird remains were found in two of those previous cases.
Maintenance records indicate that the fan blades on the failed right engine underwent ultrasonic inspections in November 2025 and May 2026. No damage was found during either inspection. The official cause of the July 10 failure remains under investigation by the NTSB, with participation from the Federal Aviation Administration (FAA), Boeing, and CFM International, a joint venture between GE Aerospace and Safran.
Regulatory protocols and historical precedent
The investigation has generated friction between the NTSB and Ryanair regarding public communications. On August 7, 2026, NTSB Chair Jennifer Homendy issued a letter to Ryanair CEO Michael O’Leary after he told investors the investigation was focused on foreign object damage rather than aircraft age or maintenance. Homendy stated that the NTSB had made no such determination and noted that O’Leary’s comments violated International Civil Aviation Organization (ICAO) Annex 13 protocols governing accident investigations.
The aviation industry is closely monitoring the investigation due to the aircraft and engine types involved. The Air Current reported that the event closely mirrors the April 2018 Southwest Airlines flight 1380 uncontained engine failure, which also involved a Boeing 737-700 and a CFM56-7B engine. That incident resulted in one passenger fatality after a shattered window caused partial ejection, leading the FAA to mandate engine inlet redesigns by July 2028.
The NTSB addressed the historical context directly in its preliminary report:
The investigative team is aware of previous … events with similar engine models that resulted in damage to engine inlets or cowlings and fuselage structures. Determination of any relevant similarities or details between this accident and previous events remains under investigation.
AirPro News analysis
We observe that the public rebuke of a major airline CEO by the NTSB is a rare and significant enforcement of ICAO Annex 13 communication protocols. Operators typically defer entirely to the investigating authority to avoid compromising the integrity of an active probe. The NTSB’s swift correction underscores the agency’s zero-tolerance policy for operator speculation, particularly when an event involves high-profile safety concerns like uncontained engine failures.
The CFM56-7B is one of the most widely used commercial aviation engines in the world. Any investigation involving a fan-blade-out event on this powerplant will naturally draw intense regulatory scrutiny, especially given the precedent set by the 2018 Southwest Airlines accident. While the discovery of bird remains introduces foreign object damage as a variable, we expect investigators will rigorously examine the efficacy of the ultrasonic inspections conducted in November 2025 and May 2026 to understand how the blade failure propagated.
Sources: National Transportation Safety Board
Photo Credit: NTSB
Regulations & Safety
FAA Installs New Surface Radar at Newark Airport
The FAA unveiled a new SMR-4 radar at Newark Liberty as part of a $30 million infrastructure upgrade targeting runway safety.
U.S. Transportation Secretary Sean P. Duffy and Federal Aviation Administration (FAA) Administrator Bryan Bedford unveiled a new Surface Movement Radar-Systems Model 4 (SMR-4) at Newark Liberty International Airport (EWR) on August 11, 2026, replacing a 30-year-old legacy system.
The installation is part of a broader $30 million infrastructure upgrade at the New Jersey hub designed to prevent runway incursions and reduce delays. According to the FAA press release, the SMR-4 allows air traffic controllers to track aircraft and ground vehicles across runways and taxiways in all weather and visibility conditions.
Newark’s infrastructure modernization
The $30 million funding allocation for EWR spans a three-year period and targets critical technological vulnerabilities. During the summer of 2025, the Airports experienced severe delays that prompted the FAA to deploy Software patches, expedite fiber deployment, and rebalance flight volumes. To date, 90% of the airport’s legacy copper wiring has been replaced with high-speed fiber.
“Since the start of this administration, we have been working towards building a modern system that will serve America’s skies for generations,” Duffy stated. “From replacing Newark’s ancient copper wire to investing $30 million into new infrastructure and bringing new radar online, we are delivering real safety and efficiency enhancements at one of our nation’s busiest airports.”
The FAA has set a target deadline of summer 2027 for EWR to install new electronic information displays, upgraded voice switches, and a new long-range radar system.
National surface awareness rollout
The EWR installation is one of five SMR-4 systems deployed nationwide to date. The agency has accelerated its broader technological overhaul over the past year, replacing 60% of all copper wires in its national network and converting 363 radio sites. The FAA also transitioned 19 air traffic control towers to electronic flight strips and installed 151 IP voice switches at control towers across the country.
Bedford emphasized the operational volume driving the upgrades. “Newark sees well-over a thousand flights per day, and the new Surface Movement Radar will help controllers keep those flights safe at this major U.S. hub,” Bedford said, describing the deployment as a step toward modernizing the national airspace.
The push for enhanced surface surveillance follows a fatal runway incursion at LaGuardia Airport (LGA) on March 22, 2026. In that event, Air Canada (AC) Express Flight 8646, operated by Jazz Aviation using a Bombardier CRJ900, collided with an airport firefighting vehicle on Runway 4. The National Transportation Safety Board (NTSB) confirmed two pilot fatalities and 39 injuries. The NTSB is leading the ongoing Investigation, and no official cause has been determined.
In response to surface safety concerns, the FAA has installed 96 new Surface Awareness Initiative systems nationwide over the past year to provide controllers with better situational awareness.
AirPro News analysis
The FAA’s rapid deployment of 96 Surface Awareness Initiative systems and the ongoing SMR-4 rollout represent a tangible shift toward proactive technological intervention in ground operations. While the NTSB has not yet concluded its investigation into the March 2026 LaGuardia runway incursion, the agency’s aggressive timeline for replacing legacy copper wiring and installing surface tracking tools indicates that regulators are prioritizing immediate situational awareness upgrades for air traffic controllers. We view the $30 million targeted investment at EWR as a template the FAA is likely to replicate at other high-density hubs where legacy infrastructure limits operational capacity during low-visibility conditions.
Sources: Federal Aviation Administration
Photo Credit: Federal Aviation Administration
Regulations & Safety
FAA Revises Takeoff Obstacle Notes in Terminal Procedures
The FAA updates its Terminal Procedures Publication to simplify IFR departure planning with new DER crossing altitudes.
The Federal Aviation Administration (FAA) is revising the presentation of takeoff obstacle notes within its Terminal Procedures Publication (TPP), offering pilots a simplified method to utilize standard climb gradients during Instrument Flight Rules (IFR) departures.
In a press release issued on August 5, 2026, the National Business Aviation Association (NBAA) announced the charting updates. The revisions provide pilots with a specific Departure End of Runway (DER) crossing altitude, allowing them to safely clear low, close-in obstacles without calculating non-standard climb requirements for every individual threat.
Restructuring Obstacle Departure Procedures
Under the updated format, the FAA separates “Takeoff Minimums Obstacles” from “Low, Close-in Obstacles.” The agency defines low, close-in obstacles as those measuring 200 feet or less above the DER elevation.
Previously, pilots faced complex lists of individual obstacles during pre-flight planning. The new charting method consolidates these threats into distance groupings measured in quarter-mile increments from the DER. If a pilot meets the newly published DER crossing altitude, they can proceed using the standard IFR climb gradient of 200 feet per nautical mile (ft/NM) rather than a higher, non-standard gradient.
Industry advocacy and implementation timeline
The NBAA initially launched the effort to address the complexity of takeoff obstacle notes in 2015 during the FAA Aeronautical Charting Meeting. The resulting changes stem from collaboration between the FAA, the U.S. Instrument Flight Procedure Panel, and commercial charting providers including Jeppesen and Garmin.
While the FAA has officially adopted the new presentation standards, updating the entire National Airspace System will require a phased approach. The NBAA noted that the transition across all published procedures and commercial charts will take several years to complete.
AirPro News analysis
We view this charting revision as a practical step toward reducing pilot workload during IFR departure planning. By providing a clear DER crossing altitude that validates a standard 200 ft/NM climb, the FAA removes the ambiguity of evaluating multiple low, close-in obstacles individually. This change will be particularly beneficial for operators of aircraft with limited climb performance, allowing them to determine immediately if reported weather conditions permit visual obstacle avoidance when a higher climb gradient is unachievable.
Photo Credit: NBAA
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