The Wittman Tailwind / Buttercup (W-8 Tailwind, W-10 Tailwind (plans-built experimental)) is a single piston aircraft. This AeroTell reference page covers its specifications, performance figures, weights, typical pricing, and the applicable FAA regulatory record — Airworthiness Directives, Supplemental Type Certificates (STCs), and Special Airworthiness Information Bulletins (SAIBs) — to help pilots, owners, buyers, and A&P/IA mechanics evaluate the Wittman Tailwind / Buttercup. AeroTell is a quick-reference research aid, not a compliance or airworthiness-signoff source; always verify against the official FAA record.
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