The preowned business aircraft market is firing on all cylinders heading into Q4 2025. According to AMSTAT data, jet and turboprop transactions finished Q3 nearly 10% above the 10-year average, with year-to-date resale activity up 8.7% compared to 2024. Business jet sales led the charge, up 5.6% year-over-year, while medium jets posted a robust 14.2% quarterly jump. Heavy jets like the Gulfstream G550 and G650ER remain top performers. With 100% bonus depreciation returning in the US tax code, industry analysts expect Q4 closings to accelerate as buyers move to capitalize on tax incentives before year-end.