Category 1 Operations
Category 1 is the simplest of the four operating categories under 14 CFR Part 107 Subpart D, and it is the only one that requires no FAA-accepted declaration of compliance. An aircraft either physically meets the Category 1 test or it does not — there is no application, no certification process, and no paperwork to file. This lesson covers the exact eligibility test in 14 CFR 107.110, the one operating restriction that still applies even to a Category 1 aircraft, and how to confirm eligibility before a job.
Test one: the 0.55-pound weight limit
Under 14 CFR 107.110(a)(1), a small unmanned aircraft qualifies for Category 1 only if it weighs 0.55 lb (250 g) or less on takeoff and throughout the entire duration of the operation. This is not a nominal or advertised weight — it is the actual, total weight of everything that will be in the air, including the airframe, the battery installed for that flight, any payload such as a camera, and any other attachment. If a heavier battery, an accessory, or a payload pushes the total over 0.55 lb, the aircraft no longer meets the Category 1 test for that flight, even if the bare airframe alone would qualify.
Test two: no exposed rotating parts that could lacerate skin
Under 14 CFR 107.110(a)(2), the aircraft must not contain any exposed rotating parts that would lacerate human skin upon impact. This targets propeller and rotor hazards specifically. Many sub-250g consumer drones are deliberately designed with small, low-mass propellers, propeller guards, or ducted/shrouded rotor housings specifically so they pass this test in addition to the weight test. An aircraft can meet the weight threshold and still fail Category 1 eligibility if its exposed propellers present a genuine laceration hazard on contact — both tests in 107.110(a) must be satisfied, not just one.
Why no declaration of compliance is required
Categories 2 and 3 require the manufacturer to obtain FAA acceptance of an injury-severity test result before any pilot can rely on that category. Category 1 skips this process entirely because the FAA determined that an aircraft this light, without a laceration hazard, presents a low enough baseline risk on its own that a formal certification process is not necessary. This is precisely why Category 1 is described as the only category with no FAA-accepted declaration of compliance requirement: the weight and hazard test itself functions as the safety case, verified directly by the remote pilot rather than pre-certified by the FAA.
The one restriction that still applies: sustained flight over open-air assemblies
Meeting the Category 1 aircraft test does not remove every restriction. Under 14 CFR 107.110(b), a remote pilot may not conduct sustained flight over an open-air assembly of human beings — a crowd or gathering, such as a concert, festival, or sporting event — unless the operation also complies with either 14 CFR 89.110 (Standard Remote ID) or 89.115(a) (a Remote ID broadcast module operated within visual line of sight). In practice, this means a Category 1 aircraft can still fly over individual pedestrians or small, moving groups of non-participants without difficulty, but hovering or circling repeatedly over a dense, stationary crowd triggers this added Remote ID condition, layered on top of the Category 1 aircraft eligibility itself.
Category 1 eligibility (weight and rotating-parts tests) versus the added Remote ID condition for sustained flight over a crowd.
View LargerScenario: photographing a busy downtown block for a listing
A remote pilot is hired to shoot aerial photos of a building for sale on a busy downtown block, where the flight path will briefly pass over pedestrians on the sidewalk below who are not participants in the operation. The pilot's aircraft, fully loaded with its camera payload and flight battery, weighs 0.52 lb, and its propellers are small, low-mass, and shrouded by an integrated guard. Because the total weight is under 0.55 lb and the propellers do not present a laceration hazard, the aircraft meets both tests of 107.110(a) and the pilot can legally overfly the sidewalk pedestrians without a waiver or a declaration of compliance. If instead the pilot briefly needed to circle repeatedly over a large outdoor farmers' market crowd two blocks over, that stationary assembly of people would trigger the sustained-flight-over-open-air-assembly condition in 107.110(b), requiring Remote ID compliance under 89.110 or 89.115(a) for that portion of the flight.
Category Classifier Helper
Confirming Category 1 eligibility before a job
Do this before every flight where the flight path will cross over non-participants, not just once when the aircraft is purchased.
Weigh the aircraft in its actual flight configuration
Weigh the aircraft with the battery that will actually be used, any payload such as a camera or sensor, and any other attachment, exactly as it will be flown. Do not rely on the manufacturer's published bare-airframe weight if any accessory is added.
Inspect the propellers or rotors for a laceration hazard
Confirm whether the propellers are exposed and rigid enough to present a genuine skin-laceration hazard on contact, or whether the aircraft has guards, ducting, or sufficiently light/flexible blades that mitigate this hazard.
Review the planned flight path for open-air assemblies
Identify whether any portion of the flight will involve sustained flight, such as hovering or repeated circling, directly over a dense, stationary crowd or gathering, as opposed to briefly transiting over scattered pedestrians.
Document the check for the job file
Keep a simple record of the weighed configuration and rotor inspection for the specific job, particularly for commercial clients who may ask how compliance was confirmed.
| Mistake | Why it happens | Correct understanding | Regulation / source |
|---|---|---|---|
| Using the manufacturer's published bare-airframe weight instead of the actual flight weight | Marketing specs list a single weight figure that looks authoritative | The 0.55 lb limit applies to the aircraft with everything attached, at takeoff and throughout the flight — a heavier battery or payload can push a "sub-250g" model over the line | 14 CFR 107.110(a)(1) |
| Assuming any drone under 0.55 lb automatically qualifies for Category 1 | The weight test gets most of the attention since it is the more memorable number | The aircraft must also have no exposed rotating parts capable of lacerating skin — both tests in 107.110(a) must be met | 14 CFR 107.110(a)(2) |
| Believing Category 1 has no restrictions once the weight and rotor tests are met | Category 1 is described as requiring no declaration of compliance, which is sometimes read as meaning no restrictions at all | Sustained flight over an open-air assembly still requires Remote ID compliance under 89.110 or 89.115(a), even for a Category 1 aircraft | 14 CFR 107.110(b) |
| Thinking Category 1 requires an FAA application, just a simpler one than Category 2 | Every other category in Subpart D involves some form of FAA acceptance or certificate | Category 1 requires no FAA-accepted declaration of compliance whatsoever — eligibility is confirmed directly by the remote pilot through the weight and rotating-parts tests | 14 CFR 107.110 |
Does a Category 1 aircraft need any FAA paperwork before flying over people?
No. Category 1 is the only Subpart D category with no FAA-accepted declaration of compliance requirement. The remote pilot verifies eligibility directly by confirming the aircraft weighs 0.55 lb or less, with everything attached, and has no exposed rotating parts that could lacerate skin.
Can a Category 1 aircraft ever be restricted from flying over people?
Yes, in one specific situation: sustained flight over an open-air assembly of people, such as hovering or circling over a crowd, requires Remote ID compliance under 14 CFR 89.110 or 89.115(a), even for an aircraft that otherwise meets the Category 1 aircraft test.
If my drone is marketed as "under 250 grams," is it always Category 1 eligible?
Not automatically. The advertised weight is usually the bare airframe. Adding a heavier battery, a payload, or an accessory can push the actual flight weight over 0.55 lb (250 g), which would disqualify that specific flight configuration from Category 1.
Test Your Knowledge
Answer the questions below to check your understanding. Every answer can be found in the lesson above.