For the first time in nearly a decade, the U.S. Air Force’s primary fighter fleet has fallen below the minimum size that Congress wrote into law. The number that was supposed to be a floor has become a ceiling, and the gap between what America needs in the air and what it can actually put there is widening by the month. Rep. August Pfluger, a former F-22 Raptor pilot who now represents Texas in Congress, called it a “wake-up call” during an Aerospace Nation interview at AFA headquarters in Arlington, Virginia, on June 2. “Just that stat right there should wake up everybody,” Pfluger said. “This is the moment I think that Congress needs to take action.” The legal minimum, codified in 2017, requires the Air Force to maintain at least 1,145 fighters in its primary mission aircraft inventory. A temporary waiver granted in 2025 has now expired. The service’s actual inventory has slipped below that threshold, and the trajectory points downward for years to come.

The Retirement Wave

The math behind the crisis is straightforward: the Air Force is retiring old jets faster than new ones arrive. The A-10 Thunderbolt II, the service’s iconic close air support aircraft, is being fully retired. The F-15C/D Eagle, the backbone of the Air Force’s air superiority mission for four decades, has been steadily removed from the inventory as airframes hit their structural limits. These retirements are not optional. The A-10 fleet, first delivered in the 1970s, has been extended through multiple structural life programs. The F-15C/D fleet, equally aged, lacks the radar and electronic warfare capabilities needed for modern contested environments. Keeping them flying would cost more than they are worth in operational terms. But the jets replacing them are arriving at a trickle. The Air Force is purchasing only 24 F-35A Lightning IIs in Fiscal Year 2026, half the previously planned amount. An additional 14 may be funded through congressional reconciliation, but that remains uncertain. The F-15EX Eagle II, Boeing’s updated fourth-generation fighter, is being bought at a rate of roughly 21 per year.

The 72-Fighter Threshold Nobody Can Reach

Air Force leadership has stated for years that the service needs to acquire at least 72 new fighters annually just to prevent the fleet from shrinking. The FY2027 budget request totals only 62 combined aircraft: 38 F-35As and 24 F-15EXs. Even that number requires full funding, which is never guaranteed in the appropriations process. The last time the Air Force bought more than 72 fighters in a single year was 1998. The service has not come close since. The Air National Guard, which flies a significant portion of the nation’s fighter fleet, has sounded the alarm with unusual directness. Adjutants general from every state and territory with Air Guard fighter units signed a single joint letter to Congress warning of “dire consequences” if procurement rates do not increase. They are pushing for 100 new fighters annually, not 72, arguing that the current rate will leave guard units without enough aircraft to train pilots or meet homeland defense missions.

The F-47 Complication

Adding complexity to the picture is the F-47, the Air Force’s next-generation fighter being developed by Boeing under the Next Generation Air Dominance (NGAD) program. The proposed FY2027 budget includes $3.5 billion in F-47 development funding, but the aircraft is years away from production deliveries. While the F-47 represents the future, it cannot solve the near-term fleet size problem. The Air Force’s own fighter roadmap projects that the fleet will continue to shrink through at least 2028 before new production can begin to reverse the trend. Even then, growth depends on Congress funding procurement at levels that have not been achieved in a quarter century. Pfluger, who flew combat missions in the F-22, frames the issue in blunt operational terms. The fighter fleet is the smallest it has been since the Air Force became an independent service in 1947, while the threat environment, spanning China, Russia, Iran, and North Korea, has never been more demanding.

A Break-Glass Moment

The convergence of aging airframes, slow production rates, expanding threats, and a legal mandate that has now been breached creates what Pfluger describes as a “break-glass moment” for the Air Force and for Congress. Multiyear procurement contracts for both the F-35 and F-15EX have been proposed in the Senate, which could lower per-unit costs and give manufacturers the certainty needed to invest in expanded production lines. Boeing has indicated it could reach a maximum production rate of 36 F-15EXs per year with new facility investment. But production capacity is only part of the equation. Without the political will to fund sustained fighter procurement at rates the Air Force has not seen in decades, the fleet will continue to shrink. The legal floor has been breached. The question now is whether anyone in Washington treats it as the emergency it represents, or whether the number simply gets waived again.

Sources: Air & Space Forces Magazine, Military Times, Breaking Defense, Air Force FY2027 Budget Request, National Security Journal