RCW Chapter 47.68 establishes WSDOT Aviation Division with broad rulemaking, enforcement, and aircraft-registration authority (§§47.68.070, 47.68.210, 47.68.230, 47.68.250, 47.68.310, 47.68.320). The chapter focuses on aircraft and operator certification rather than facility-level licensing — the sections reviewed via May 14 2026 automated retrieval do not contain explicit state-level private-use heliport licensure or registration requirements. The WAC 468 series has WAC 468-200 (emergency air operations) and WAC 468-230 et seq. (commercial airports), with a gap at WAC 468-220 where private-use facility rules would conventionally live. Tier II Light Touch placement reflects active aviation administration + structural framework presence; calibration question open on whether WA in practice has a Tier IV recognition-gap profile for private-use heliports specifically, similar to TX/NV/CO. Direct WSDOT Aviation primary-source confirmation would resolve.
Sources: RCW Chapter 47.68 (§§47.68.070, 47.68.210, 47.68.230, 47.68.250, 47.68.310, 47.68.320); WSDOT Aviation Division; WAC 468 series (commercial airport rules at 468-230 et seq.; gap at 468-220 where private-use facility rules would conventionally live)