Supersonic is back on the table. Has the industry bet on the wrong horse?

Is Supersonic back?

While Qantas has spent the past decade engineering Project Sunrise, the ultra-long range non-stop flights from Sydney to London and New York, built entirely around the idea that passengers will trade speed for the removal of a stopover, the United States government has quietly been dismantling the exact regulatory barrier that killed supersonic travel the first time.

On 2 July 2026, the FAA published a Notice of Proposed Rulemaking that would repeal the 53-year ban on civil supersonic flight over US land, replacing the old speed-based prohibition with a noise-based performance standard. If it's finalised, an aircraft that keeps its sonic boom overpressure at the ground below 0.11 pounds per square foot will be legally allowed to fly supersonic across the continental United States, something that hasn't been permitted since the Nixon administration banned it in 1973.

That's not a symbolic gesture, it's the single regulatory wall that made Concorde commercially uneconomic, and it's coming down.

So the question worth asking directly: is supersonic commercial travel the actual next frontier, and did the industry's recent multi-billion dollar bet on ultra-long-range subsonic flying just get overtaken by a faster, older idea coming back into fashion?

What actually killed Concorde

It's worth being precise about this, because "Concorde failed" gets repeated as received wisdom without much explanation of why.

Concorde wasn't grounded by physics or safety. It flew commercially for 27 years and, for long stretches of that, British Airways ran it profitably by selling raw speed and exclusivity at premium fares. What killed it was a combination of structural economics and historical bad luck arriving at the same time.

The aircraft burned roughly 5,638 gallons of fuel per hour, around four times the fuel burn of a first-generation subsonic jet, while carrying only around 100 passengers in a narrow, aerodynamically constrained fuselage. Because sonic booms were banned over land almost everywhere, Concorde could only fly at its design speed over open ocean, which eliminated the vast majority of possible routes and meant a transpacific service was never viable at all.

Then, in 2000 the Air France crash, 9/11 saw a collapse in premium transatlantic travel, and a 72% jump in maintenance costs on an ageing fleet, arrived all within three years of each other, and both operators concluded the business case for viability simply wasn't there anymore.

Concorde didn't die because supersonic flight doesn't work. It died because the economics only worked on a tiny number of ocean-crossing routes, and even there, the margin for disruption was razor thin.

What's actually different this time

Boom Supersonic's Overture, the aircraft most likely to be the first genuine test of whether this changes, is being designed around exactly the constraints that killed Concorde.

It's an 80-seat aircraft targeting Mach 1.7, running on 100% sustainable aviation fuel and a clean-sheet engine, Symphony, developed specifically to meet modern noise certification standards. United, American, and Japan Airlines have placed a combined 130 orders and pre-orders, though it's worth being clear these are non-binding, and analysts widely read them as options to move quickly if Boom clears certification, not firm financial commitments.

The regulatory shift matters more than the aircraft, though. Modern aerodynamic shaping techniques, the same "Mach cutoff" and boom-shaping research NASA's X-59 demonstrator has been flight testing from Palmdale, can refract a sonic boom so it never fully reaches the ground as a sharp crack, arriving instead as something closer to a soft thump. That's the technical basis for the FAA's proposed 0.11 psf overpressure limit, and it's the first time in over fifty years a US regulator has proposed a framework that would allow supersonic aircraft to legally cross the continental United States rather than being confined to ocean routes the way Concorde was.

How many years off is supersonic, and what's actually constraining it

Realistically, longer than the press releases suggest, and the constraint isn't really design or aerodynamics. It's certification and capital.

Boom's own public target has Overture's first test flight in 2027, FAA type certification in 2029, and first passenger flights arriving shortly after, with some more recent projections pushing full network deployment across all three launch carriers out to 2031. Independent analysts, including Forecast International, have publicly flagged this as speculative, noting that a clean-sheet airframe and a clean-sheet engine being certified simultaneously is a genuinely difficult program, and that history suggests these timelines slip into the following decade rather than land on schedule.

The FAA's own proposed rule is still just that, a proposal, with the public comment period closing on 17 August 2026 and no final rule yet in force. Certification of a completely new engine and airframe typically takes over a decade for major manufacturers building on decades of prior type experience. Boom is doing it from a standing start.

So, the honest answer to "how many years off" is: the regulatory door may be open within twelve to eighteen months, but a genuinely mature, reliable, commercially scaled supersonic passenger network is very unlikely to exist before the mid-2030s at the earliest, and a delay into the late 2030s wouldn't be a surprise to anyone who has watched a clean-sheet aircraft certification program before.

Could it actually kill ULR flying?

This is the more interesting question, and I don't think the answer is as simple as "yes, speed wins."

Project Sunrise and Overture are actually solving different problems for different passengers. Sunrise removes a stopover on a route most people fly rarely, prioritising comfort, sleep, and a single uninterrupted block of time over a 19-plus hour sector.

Overture, at least in its first generation, is an 80-seat aircraft aimed squarely at premium transatlantic and select transpacific business routes, the same market Concorde chased, just with better economics and a wider route map thanks to the sonic boom rule change.

An 80-seat supersonic aircraft is not a threat to a 787 or A350 flying 300 passengers non-stop from Sydney to London. It's a threat to first and business class premium yield on the routes where both could theoretically compete, and even there, only once Overture actually exists in numbers, which on the current trajectory is unlikely to happen before Sunrise has been operating for the better part of a decade.

Has Qantas backed the wrong horse? I don't think so. Qantas built Sunrise around solving a genuine, immediate, well-understood passenger problem with proven subsonic technology. Boom is attempting to solve a different problem of raw speed, with technology that still has to clear a regulatory door that's only been open for a matter of weeks, and a certification program that hasn't produced a certified aircraft yet. Sunrise is a bet on something that already works. Overture is a bet on something that might.

Who's actually positioned to win either way

The airlines currently holding Boom orders, United, American, and Japan Airlines aren't betting their fleets on Overture succeeding. They're buying optionality, at minimal financial exposure, on the chance the aircraft clears certification. That's a rational hedge, not a strategic pivot.

The more interesting question is what happens if the FAA's rule change actually finalises and a second, more credible supersonic manufacturer enters the race behind Boom, backed by an existing certified engine and airframe program rather than a clean-sheet design. That's the scenario that would genuinely accelerate the timeline, but it's not yet on the table.

For now, the real story isn't that supersonic has already won. It's that the single biggest regulatory obstacle that killed the last generation of supersonic travel is being removed in real time, for the first time in over fifty years, and the industry has roughly a decade to work out whether the economics that doomed Concorde have actually been solved.

Jotore Aviation Consulting provides maintenance strategy, regulatory compliance, and CAMO/AMO advisory services to Australian aviation operators. For more aviation industry analysis, visit www.jotoreaviation.au