MI HB4119

Expands sales tax exemptions for aircraft parts and materials (excluding shop equipment or fuel) by removing requirements that the aircraft leave Michigan within 15 days and not be based or registered in the state before or after installation

Simplifies the exemption for aircraft sales by removing the requirement that the aircraft be "temporarily located" in Michigan for specific purposes, while maintaining the 15-day departure requirement and prohibition on post-sale basing or registration in the state

Maintains existing exemptions for domestic air carriers purchasing aircraft with at least 6,000 pounds maximum certificated takeoff weight used for cargo or passenger transport

Adds a definition of "aircraft" as an aerial vehicle used in aviation, excluding unmanned aerial vehicles (drones)

Requires the legislature to annually appropriate funds from the state general fund to the state school aid fund to compensate for any revenue loss from these tax exemptions; takes effect 90 days after enactment