U.S. air traffic overhaul faces execution risks amid $42.5bn modernisation push

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US air traffic modernization risks

Highlights

Transport Secretary Sean Duffy secured $12.5bn additional funding and seeks a further $30bn for a U.S. air traffic control system modernisation, aiming to accelerate upgrades from 15–20 year cycles.
FAA data reports seven top-tier runway close calls in 2024, up from four in 2025, while flight delays from equipment issues rose 338 per cent year over year.
Execution risks persist due to fragmented project schedules, waiver of procurement rules, staffing shortages, and reliance on congressional appropriations, casting doubt on Duffy's 2028 modernisation target.

Funding drive and upgrade timetable

As reported by the Financial Times, Transport Secretary Sean Duffy is pushing to fast-track a broad overhaul of the U.S. air traffic control system after a fatal airliner-helicopter collision near Washington DC on his first day in office and subsequent near misses in Chicago and Phoenix.

Duffy has secured $12.5bn in additional congressional funding for new radar systems and equipment upgrades in control towers, and he is seeking another $30bn for a wider modernisation effort. He argues that drawn-out deployment cycles of 15 to 20 years are no longer compatible with safety needs, saying outdated infrastructure, including paper logs, ageing copper wiring and floppy-disk-based backup systems, is holding back the system.

Federal Aviation Administration data cited in the report show seven of the most serious category of runway close calls this year, up from four in 2025. Rebecca Guy, the FAA's acting chief technology officer, says equipment-related flight delays rise 338 per cent between 2024 and 2025, with technicians at times resorting to 3D-printing parts to keep systems running.

Guy also describes operational failures linked to old equipment, including an incident near Washington DC last year in which toxic fumes from a short-circuited voice switch force an evacuation of controllers and a temporary shutdown of local airspace. In some hot-weather states, broken elevators at towers also lead to airspace closures because of concerns controllers climbing stairs in extreme heat could collapse or suffer heart attacks.

Staffing and governance concerns cloud delivery

Support for the upgrade is broad across airlines, pilots' unions and aviation groups, with American Airlines chief executive Robert Isom welcoming the administration's focus on modernisation after decades of outdated technology. Duffy says 68 per cent of old copper wiring has already been replaced and 49 per cent of voice switches upgraded under his watch.

But the Government Accountability Office warns in September that poor planning could leave controllers relying on older systems for longer, raising the risk of outages, ground stops, delays or safety incidents. The watchdog says the FAA does not provide an underlying budget analysis for the overhaul and that its 11,389 individual project schedules are not integrated, while also criticising a blanket waiver that bypasses standard procurement and implementation rules.

Labour shortages remain another major constraint. Nick Daniels, president of the National Air Traffic Controllers Association, says implementing the transition while facilities are critically understaffed is like changing a tyre at 70 miles an hour, although he adds that direct controller involvement gives the effort a chance of success.

Other aviation specialists argue the financing model is the deeper structural weakness. William Voss, a former senior FAA official and veteran controller, says the system lacks enough spare capacity to both rebuild staffing and shift safely to new equipment, while Reason Foundation transport policy director Robert Poole argues dependence on congressional appropriations rather than direct user fees makes long-term reform funding unreliable and leaves Duffy's 2028 target looking unrealistic.

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