National Defense Authorization Act (NDAA) covered-country and flow-down requirements ban federal agencies from purchasing or operating unmanned aircraft systems (UAS) — and their components — from covered foreign entities. The restrictions apply across DoD, DHS, and other federal procurement channels, and they extend beyond direct purchases to federal grants, contracts, and cooperative agreements.
If you build, integrate, or buy drones that touch federal money in any of those forms, these requirements shape what parts you're allowed to fly.
It's a component-level rule, not a drone-level rule
The most common misreading of the NDAA restrictions is treating them as a ban on finished aircraft from covered manufacturers. They aren't just that. Individual components — motors, propellers, airframes, structural parts — are covered, and compliance is required at the component level, not just the system level.
That means a drone assembled in the US by a US company can still fail compliance if a single covered-entity part is on its bill of materials. For most FPV and Group 2 platforms, the propeller is one of those parts: US programs overwhelmingly designed around foreign-made tri-blades that are no longer sourceable under NDAA flow-downs.
Flow-downs: how the ban reaches subcontractors
Prime contractors don't absorb these restrictions alone — they flow the requirements down to their suppliers. If you sell a subassembly to a prime on a federal program, your components inherit the same compliance bar. That's why component makers and integrators far from any direct federal contract are still being asked for country-of-origin and supply-chain documentation on parts as small as a propeller.
The regulatory direction of travel
The NDAA restrictions didn't arrive alone. Federal restrictions on foreign-made UAS and their components continue to tighten — including additions to the FCC Covered List (we cover that in its own article). And a growing number of state and local agencies are adopting NDAA-aligned procurement policies, extending federal compliance requirements across the broader public sector.
The practical read: component-level restrictions on foreign drone parts are broadening, not narrowing. See the full regulatory timeline for how these milestones stack up.
What to do about it
- Audit your bill of materials at the component level — including propellers, motors, airframes, and structural parts.
- Identify which parts trace back to covered foreign entities, at any tier of the supply chain.
- Source domestic, NDAA-compliant replacements — ideally drop-in equivalents so you don't have to redesign or re-tune the platform.
For propellers specifically, Anvil Propulsion makes domestic, NDAA-compliant propellers in nine families, each built to the size class US programs designed around, and quoted on request.
Brand by brand
The same question, answered for the foreign propeller brands most often found on a US drone BOM: Gemfan, HQProp, Ethix, Dalprop, iFlight Nazgul, T-Motor and DJI.