Quiz UAS Open Category Operations Intermediate

EASA UAS Open Category Operations Knowledge Quiz

10 questions
~15 minutes
Intermediate level
Generated Mar 05, 2026
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Question 1
1 / 10

A remote pilot plans to fly a C1-class drone over a suburban area. Which Open subcategory is appropriate for this operation?

Explanation: C1-class drones may operate in subcategory A1, which allows flight over uninvolved persons but not over assemblies, provided the remote pilot meets competency and registration requirements.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.010

Question 2
2 / 10

When operating in the Open category, what is the maximum altitude allowed above the ground level?

Explanation: The Open category limits operations to a maximum altitude of 120 metres above the surface, except when flying over an obstacle with owner’s consent within 15 metres.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.010(1)(b)

Question 3
3 / 10

A remote pilot operating in subcategory A2 must maintain what minimum horizontal distance from uninvolved persons?

Explanation: In A2 operations, the UAS must maintain a horizontal distance of at least 30 m from uninvolved persons, which can be reduced to 5 m if the drone has a low-speed mode feature.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.030(2)

Question 4
4 / 10

What is the maximum take-off mass allowed for a drone operating in subcategory A3?

Explanation: Subcategory A3 permits operations with drones up to 25 kg MTOM, provided flights are conducted far from people and built-up areas.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.040(1)

Question 5
5 / 10

What competency is required for a remote pilot operating a C2-class drone in subcategory A2?

Explanation: Operating in A2 with a C2-class drone requires the pilot to complete online training, pass the online exam, and declare completion of practical self-training in a low-risk environment.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.020(4)

Question 6
6 / 10

A pilot wants to fly a C0-class drone weighing 200 g in a park where people are present. Which subcategory applies?

Explanation: C0-class drones (under 250 g) may operate in A1, allowing flight over people but not over assemblies, with minimal training requirements.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.010(1)(a)

Question 7
7 / 10

Which of the following statements about visual line of sight (VLOS) in the Open category is correct?

Explanation: Open category operations require the remote pilot to maintain VLOS with the UAS at all times, except during FPV flight when a UA observer maintains VLOS and communicates with the pilot.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.010(1)(d)

Question 8
8 / 10

Before starting an operation in the Open category, what must the remote pilot ensure regarding the operational environment?

Explanation: The pilot must ensure the operation area complies with subcategory requirements, meaning in A3, it must be free from uninvolved persons and at a safe distance from buildings.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.040(1)(b)

Question 9
9 / 10

When must a UAS operator register in the Open category?

Explanation: UAS operators must register if they operate drones weighing 250 g or more or equipped with sensors capable of capturing personal data, even if lighter.

Reference: EU Regulation 2019/947, Article 14

Question 10
10 / 10

A remote pilot loses VLOS momentarily due to a tree obstruction. What should they do according to Open category requirements?

Explanation: If VLOS is lost, the remote pilot must immediately attempt to regain it or safely terminate the flight, as continuous VLOS is mandatory for Open category operations.

Reference: EU Regulation 2019/947, Annex Part A, UAS.OPEN.010(1)(d)

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