Last A-10 to Leave Depot, Maintenance Squadron to Deactivate

The Air Force is sending its final A‑10 Thunderbolt II through depot maintenance this month and will deactivate the 571st Aircraft Maintenance Squadron at Hill AFB, reassigning personnel to F‑35, F‑16 and C‑130 sustainment lines. Depot funding fell from $124.5M in FY2024 to $60.8M in FY2025 with no FY2026 request as the service moves to retire 162 A‑10s early (Congress recently blocked retirement of 102), a shift that may reduce long‑term aircraft availability and hasten fleet divestment even as A‑10s remain operational in the Middle East.

Analysis

Market structure: Closing the A‑10 depot removes a concentrated source of depot-level revenue (~$124.5M in FY2024 → $60.8M in FY2025 → $0 requested for FY2026) and reallocates skilled labor to F‑35/F‑16/C‑130 sustainment. Net winners: large primes and aftermarket players tied to F‑35/F‑16/F‑15EX sustainment (Lockheed Martin LMT, Raytheon/RTX, Boeing BA for F‑15EX) who capture recurring MRO revenue; losers: niche legacy-A10 parts suppliers and small public MROs lacking diversified defense sustainment contracts. Over time (12–36 months) expect incremental margin expansion at primes as higher-margin sustainment replaces one-off depot work, tightening pricing power for integrated primes versus standalone MRO shops.

Risk assessment: Tail risks include rapid geopolitical escalation (Iran‑regional conflict) that increases A‑10 operational tempo and forces Congress to restore depot funding (> $60M) within 30–90 days — which would reverse the deactivation and benefit small MRO players. In the short term (days–weeks) market impact is muted; in the next 3–12 months budget language and FY2026 appropriations (and any hearings) are the primary catalysts. Hidden dependencies: legacy GAU‑8/airframe supply chains, qualified workforce pools, and depot tooling — attrition there could permanently raise repair costs and accelerate fleet attrition if not funded.

Trade implications: Favor large-cap defense primes and avionics/parts suppliers with F‑35/F‑16 sustainment exposure (LMT, RTX, NOC, GD) and underweight small-cap MROs and commercial-dependent BA exposure in relative terms. Tactical option plays: use 9–18 month call spreads on LMT/RTX to capture sustainment upside while capping premium; size conservatively (0.5–2% notional). Rotate +200bps into A&D ETF (ITA) vs. broad industrials over the next 1–3 months; trim small-MRO exposure by 50% and redeploy into primes while monitoring FY2026 appropriations.

Contrarian angles: Consensus assumes irreversible A‑10 divestment, but Congress has repeatedly blocked retirements (2014–2016, Dec 2025) — a restored depot budget or a surge in Middle East operations could revalue small MROs and legacy suppliers quickly (weeks). Historical precedent: earlier A‑10 divestment attempts were reversed once operational need spiked; mispricing exists if small-cap MROs trade on permanent divestment assumptions. Unintended consequence: reassigning depot workforce to F‑35 sustainment may accelerate prime contractors’ after‑market capture, increasing long‑term recurring revenue for LMT/RTX even if A‑10s linger.

Key Decisions for Investors

• Establish a 2–3% portfolio long position in Lockheed Martin (LMT); scale 50% now and 50% on either (a) a >5% pullback or (b) confirmation of increased F‑35 sustainment contracts within 3–6 months. Target 12–24 month horizon, take profit at +20–30%, stop-loss -15%.
• Allocate 0.5% notional to a 9–12 month call spread on Raytheon Technologies (RTX) to capture avionics/sustainment upside with limited premium (buy modest-delta long call, sell ~30–40% OTM call). Close on FY2026 appropriations passage or a 25% move vs entry.
• Implement a pair trade: long LMT (1.5% portfolio) vs short Boeing (BA) (1.0%) to express defense-sustainment outperformance over commercial aerospace over the next 6–12 months; cover if BA’s commercial recovery accelerates (quarterly revenues >10% YOY for two consecutive quarters).
• Overweight Aerospace & Defense ETF (ITA) by +200 bps versus benchmark and reduce small-cap aviation/MRO exposure by 50% within 30 days. If Congress restores >$60M to A‑10 depot maintenance or blocks retirement of >75% of fleet within 60 days, redeploy up to 0.5–1% into selected small MRO names.