# aerospace supply chain

Rare‑Earth Shortage Forces US Aerospace and Chip Suppliers to Turn Away Orders

A tightening of global supplies for yttrium and scandium has prompted some US aerospace and semiconductor suppliers to ration or refuse orders. The shortage, rooted in near‑total production concentration outside the United States, risks disrupting engine maintenance and 5G chip supply chains and is forcing firms to prioritize major customers while policymakers weigh mitigation steps.