The US Air Force's small, aging fleet is losing its edge over China

A recent Mitchell Institute report reveals the U.S. Air Force fleet is the smallest, oldest, and least ready in its history, a consequence of post-Cold War budget cuts, heavy operational demands, and stalled modernization programs. With fighter numbers halved since 1987 and aircraft averaging 28 years old, this decline creates a critical readiness gap for potential near-peer conflicts. The situation is exacerbated by China's rapid air force expansion, which is outpacing U.S. fighter production and increasingly challenging air superiority in strategic regions, demanding a significant re-evaluation of future airpower strategies.

Analysis

The U.S. Air Force is facing a structural decline in capacity and readiness, as detailed in a new Mitchell Institute report. The service's fleet is now the smallest and oldest in its history, with the number of fighter aircraft having fallen from 4,253 in 1987 to 2,026 in 2024, and the average aircraft age increasing to 28 years. This degradation is a direct result of decades of budget cuts, where procurement funding fell 52% between 1989 and 2001, combined with a high operational tempo and severely truncated modernization programs. For instance, the F-22 program was cut from a planned 750 jets to just 187, and F-35 deliveries are currently lagging. This domestic challenge is amplified by the geopolitical context, specifically the rapid expansion of China's air force, which now out-produces the U.S. in fighters at a 1.2-to-1 ratio. The assessment from U.S. Indo-Pacific Command that American air superiority is no longer guaranteed in key strategic areas underscores a critical capabilities gap. The situation points to a long-term, systemic need for increased and sustained investment in procurement, sustainment, and next-generation platforms like the B-21 to reverse what the report calls a "capacity death spiral."

Key Decisions for Investors

• The stark readiness gap and heightened geopolitical competition create a strong secular tailwind for increased defense budgets, suggesting a long-term overweight allocation to the aerospace and defense sector.
• Investors should prioritize prime contractors with exposure to high-priority modernization programs, such as the B-21 bomber and next-generation fighters, as these are positioned to capture future spending aimed at reversing the fleet's decline.
• Monitor U.S. fiscal policy and annual defense budget appropriations closely, as the report highlights that even critical programs face truncation risk, which could introduce volatility to contractor revenue forecasts.