To operate a small UAS in Category 1 Operations Over People under 14 CFR § 107.110, the aircraft must meet which set of conditions?

Why →Under § 107.110, Category 1 requires three conditions simultaneously: weight at takeoff of 0.55 pounds (250 grams) or less including all attachments, no exposed rotating parts capable of lacerating human skin (propeller guards typically required), and no FAA-declared Airworthiness Directive or defect. All three must be met for each flight, checked by the pilot.

The trap →The "under 1 pound and manufacturer-certified for crowd overflight" option invents a manufacturer certification requirement that is not part of Category 1 (Categories 2 and 3 require means-of-compliance statements; Category 1 is self-evaluated). The "0.55 pounds or less and registered" option omits the rotating-parts and defect conditions entirely.

Field note →The 'rotating parts capable of lacerating skin' clause is why most sub-250g drones operating over people use ducted fans or propeller guards. A naked propeller, even on a light drone, fails Category 1.