European Business Jet Movements April Counter-Seasonal Decline: Germany MoM ~−21%, UK ~−14%, Barcelona ~−20%, Milan ~−11% — Fuel Supply Tightness May Be Main Driver

★★★ Dual cross-verification. April 2026 European major business jet markets showed rare counter-seasonal contraction: Germany MoM vs. March −21.2%, UK −13.8%, France −5.8% (Evidence 2); Barcelona LEBL MoM −19.5%, YoY −17.7%; Milan LIML MoM −10.9%, YoY −15.3% (Evidence 9) — while April 2025 same period was flat or growing. This aligns with multi-source supply shocks: European jet fuel price sharp rise, IEA warning on strategic reserves, NATO CEPS pipeline military priority potentially squeezing civilian supply. WingX reports business jet fuel uplift at six-week low. Notably, business aviation operators have not publicly announced capacity cuts but pass costs to clients via fuel surcharges; demand suppression manifests more as clients reducing non-essential flights. There are reports that EBACE 2026 show may be affected — if true, would further reflect industry confidence depression (note: EBACE has only been cancelled historically in 2020 during COVID; such claims require strong evidence). Confidence: high — KG news events and AviGo four-country five-airport data cross-verify April counter-seasonal decline signal consistently. But whether jet fuel prices are at 'historical high', specific IEA reserve warning wording, and EBACE cancellation assertions pending independent verification.