Treat this exam subject as a mapping exercise: every flight scenario must be connected to a risk tier, a subcategory, a pilot certificate, and an aircraft class before any other question makes sense. Start by learning the three-tier EU structure (open, specific, certified) and the A1/A2/A3 split inside the open category, then practise classifying flights until the decision takes seconds. Administrative details such as registration procedures and exam scheduling sit with your national aviation authority and EASA's civil drone pages; this guide focuses on the rules you actually apply in the scenarios.
Open, Specific, or Certified: Pick the Tier Before Anything Else
The EU framework sorts drone flying into three risk tiers: open, specific, and certified. Every scenario begins by identifying the tier, because each carries different demands for authorisation, pilot competency, and operational oversight.
The open category covers low-risk flying: no prior operational authorisation is needed, the aircraft stays below 25 kg, it remains within visual line of sight, it does not exceed the 120 m height ceiling set by the rules, and it never flies over gatherings of people. Inside the open category, operations are further divided into the A1, A2, and A3 subcategories, each defined by how close you may operate to uninvolved people. The subcategory and class-mark decisions live entirely inside this tier, which is why it anchors so much of the material you need to master.
The specific category handles medium-risk operations that the open category cannot absorb. EASA's toolkit here includes Standard Scenarios (STS), Predefined Risk Assessments (PDRA), the Specific Operations Risk Assessment (SORA) methodology, and the Light UAS operator Certificate (LUC) for qualified operators. The certified category, for the highest risk, mirrors the approach used for manned aviation. A critical boundary to internalise: the remote pilot competency certificate proves your knowledge for open-category operations; it does not by itself authorise specific-category missions.
Pilot Certificate and Operator Registration Are Two Separate Duties
Under EU rules the operator is the person or organisation managing the drone operation; the remote pilot is the individual flying. The competency certificate attaches to the pilot, while registration attaches to the operator, whose number must be displayed on the aircraft.
An operator registers with the national aviation authority of the Member State where they live or have their main place of business, and receives a UAS operator registration number that must be shown on every drone the operator uses. One operator can employ several pilots; one pilot can fly for several operators. The certificate of remote pilot competency belongs to the individual and demonstrates that they can fly safely within the open category. Note that the basic certificate covers A1 and A3 privileges; flying in subcategory A2 requires an additional A2 certificate, as the next section explains.
Build the role split into a deliberate exercise: take any story about a flight — a company-owned aircraft flown by an employee, a club aircraft shared among members, a family drone used by teenagers — and write down two lines: who manages the operation (and therefore registers and displays the number) and who flies (and therefore holds competency). Mixing the two roles produces wrong answers even when every other fact in the story was understood, so make role separation the first step in every case you analyse, before touching subcategories or class marks.
A1, A2, A3: Match Aircraft, Certificate, and People Before You Fly
The three open-category subcategories differ by proximity to uninvolved people. A1 overflight of uninvolved people is reserved for the lightest aircraft; C1 in A1 must keep clear of them, and A2 requires both a C2 aircraft and the A2 certificate of remote pilot competency.
Subcategory selection is a multi-step decision, and the order matters. First, look at the aircraft: which class mark does it carry, and which certificate does the pilot hold? Second, look at the environment: are uninvolved people below the flight path, near it, or far away? Overflight of uninvolved people in A1 is allowed only for C0 class aircraft and privately built aircraft under 250 g. A C1 aircraft flown in A1 must not overfly uninvolved people at all; the pilot keeps them at a distance instead, and no aircraft may fly over assemblies of people. A2 operations add a competency condition of their own: flying a C2 aircraft close to people under A2 requires the A2 certificate of remote pilot competency, earned through an additional theory examination and practical training, separate from the basic certificate that covers A1 and A3.
Drill this as a habit, not a lookup. For any location you intend to fly, state in one sentence which subcategory applies and why: the aircraft class, the certificate held, the people situation, and the resulting privileges. If you cannot produce that sentence quickly, the underlying knowledge is not yet secure. This habit also feeds directly into the worked scenarios later in this guide, where both the tempting subcategory and the assumed certificate turn out to be wrong.
| Subcategory | Proximity to uninvolved people | Typical aircraft and certificate | Where it fits |
|---|---|---|---|
| A1 | Overflight of uninvolved people only with C0 aircraft or privately built aircraft under 250 g; C1 aircraft must not overfly uninvolved people; never over assemblies of people | C0 or C1 class aircraft, or lightweight aircraft under the small-weight provisions; basic certificate | Parks and quiet areas with light, scattered foot traffic |
| A2 | Close to people, but a defined horizontal separation must be kept | C2 class aircraft, flown with the A2 certificate of remote pilot competency (additional theory exam and practical training) | Urban or suburban work with controlled distance from bystanders |
| A3 | Far from uninvolved people and away from residential, commercial, industrial, or recreational areas | Most aircraft up to 25 kg, including C3/C4 and many class-mark-free aircraft; basic certificate | Open countryside and sparsely populated areas |
Class Marks C0-C4 and Class-Mark-Free Aircraft: Read the Label First
A drone's class identification label (C0 to C4) determines which subcategories it may fly in. Aircraft sold before class marks existed, and privately built ones, follow separate weight-based provisions that restrict them to the more conservative subcategories.
For new aircraft, the manufacturer declares the class and marks it accordingly: C0 and C1 aircraft carry the A1-friendly privileges, C2 aircraft support A2 operations, and C3 or C4 aircraft are aimed at A3. The CE marking on the product connects to this class identification. Before any flight with a new aircraft, read the class mark and check which subcategories it unlocks, because two visually similar drones can carry different privileges — and a C1 aircraft, remember, loses the A1 overflight privilege that a C0 aircraft keeps.
Legacy aircraft without a class mark, and privately built aircraft, are treated separately. For these, weight thresholds in the rules determine where they may fly, and heavier aircraft are effectively pushed toward A3, where nobody uninvolved is nearby. When a scenario names an old model or a home-built aircraft, do not assume A1 or A2 privileges; work from the weight-based provisions instead. Making that check automatic prevents a whole family of classification errors.
Worked Scenario 1: A C2 Drone, the Town Square, and a Missing Certificate
A client asks a pilot with a C2 aircraft and a basic open-category certificate for footage over a busy market square. Flying over the crowd is out: a C2 aircraft may not overfly uninvolved people in A1, and A2 requires the A2 certificate. The better route is to confirm or obtain the A2 certificate first, then fly with A2 separation — or relocate the launch point.
Walk through the decision. The environment is dense with uninvolved people, which suggests A1 thinking, and the pilot holds a valid open-category certificate, so the instinct is that the flight is fine. Two independent checks fail. First, the aircraft is C2, and C2 privileges are built around A2 and A3, not A1; a C2 aircraft may not overfly uninvolved people under any open-category subcategory. Second, the plausible route of flying under A2 with horizontal separation requires the A2 certificate of remote pilot competency — an additional theory exam and practical training — which a pilot holding only the basic certificate does not have. The tempting mistake is treating the subcategory as a personal choice driven by the location alone, and assuming any open-category certificate unlocks A2. The better decision: check which certificate the pilot actually holds; if it is the basic one, either complete the A2 route before the job, or shift the take-off and landing to an A3-suitable open area and frame the shot from a distance.
Why it matters: the subcategory decision defines the safety margin for everyone under the flight path, and the certificate decision defines whether the pilot has been trained for that margin at all. Choosing A1 with an aircraft that does not hold those privileges, or flying A2 without the A2 certificate, removes protections the framework was designed around, and the error propagates, since every later judgement (separation distance, height, emergency handling) is anchored to the wrong rule set. Practise this pattern deliberately: identify the aircraft class first, then the certificate held, then the people situation, then the subcategory — never the reverse.
Worked Scenario 2: A Mission the Open Category Cannot Cover
A client wants a dawn flight over a festival crowd. Even a perfectly certified open-category pilot cannot fly over assemblies in that category. This mission belongs in the specific category, for example via a standard scenario or an operational authorisation.
The plausible mistake here is different from Scenario 1: it is not a wrong subcategory but a wrong tier. The pilot reasons that their competency certificate plus careful flying covers the mission, and plans it under open-category assumptions. The correct reasoning starts one level higher: flight over assemblies of people is outside the open category entirely, so no amount of subcategory selection fixes it. The better decision is to route the mission through the specific category, which may involve a Standard Scenario (STS), a predefined risk assessment, a SORA-based application, or an operational authorisation issued by the Member State authority.
Why it matters: the certificate is a proof of competency, not a mission authorisation. Knowing where its scope ends is part of the subject itself, and it shapes how you read every scenario: first ask whether the operation fits the open category at all, and only then negotiate subcategories, class marks, and certificates. A scenario that mentions crowds, gatherings, or flight beyond visual line of sight is signalling that the tier, not the subcategory, is the decision point.
Self-Check Drill: Three Maps, Three Decisions, One Rubric
Choose three real locations on a map of your area, fix your aircraft's class, decide the subcategory and required certificate for each location, and score yourself against a rubric. Repeat weekly until each classification is fast and defensible in a single sentence.
The drill works like this: print or open a map, mark three contrasting spots (a park, a residential street, an open field), and for each write the subcategory you would fly, the aircraft class assumption, the certificate that subcategory demands, the people situation, and one geo-zone check you would perform before flight. Score each location against the rubric below; a learning milestone is reaching full marks on all three within a few minutes. If a location forces you out of the open category, name the specific-category route you would take instead. Note that suggested scores here are self-study milestones, not predictions of any exam result.
A realistic preparation sequence: spend the first stretch on the three-tier structure and the operator/pilot distinction; the second on subcategories, class marks, and the basic-versus-A2 certificate split, using the table above; the third on geo zones and mixed scenarios, including the two worked cases in this guide; the final stretch on timed map drills with unfamiliar locations. You are ready to move on when you can classify any flight you imagine in under a minute, explain the certificate-versus-registration split without notes, state your own aircraft's class, the certificate your chosen subcategory requires, and your permitted subcategories, and recognise immediately when a mission needs the specific category. For administrative steps such as registration and exam arrangements, use EASA's civil drone pages and your national authority rather than study material.
- Rubric item 1: subcategory stated with a one-sentence justification citing the aircraft class, the certificate held, and the people situation.
- Rubric item 2: the class mark or weight basis of the aircraft identified, and the certificate required for the chosen subcategory confirmed (basic for A1/A3; A2 certificate for A2 operations).
- Rubric item 3: a geo-zone and airspace check named for the location before flight is assumed possible.
- Rubric item 4: operator registration and pilot competency duties assigned to the correct roles.
- Rubric item 5: any mission element outside the open category flagged, with the specific-category route named.
References and further reading
Use these references to explore the concepts and check the latest information from the relevant organizations.