The key part for ‘hobby’ pilots is the Open Category
Open category operations are bounded by three main factors:
the maximum take-off mass of the unmanned aircraft must be less than 25kg
the unmanned aircraft must be operated within visual line of sight (VLOS)
the unmanned aircraft must not be flown further than 120 metres (400 feet) from the closest point of the surface of the earth
All three of these factors must apply for an Open category operation. If not, then the operation must be conducted under the requirements of the Specific category instead.
The Open category is then further divided down into three operational ‘subcategories’, in order to allow different types of operation without the need for an authorisation, as follows:
A1 (fly ‘over’ people) – Operations in subcategory A1 can only be conducted with unmanned aircraft that present a very low risk of harm or injury to other people due to their low weight (less than 250g), their type of construction, or because they are a ‘toy1’ (i.e. they are ‘inherently harmless’). However, flight over open-air assemblies of people is not permitted.
A2 (Fly ‘close to’ people) – Operations in subcategory A2 can only be conducted with an unmanned aircraft that is compliant with a specific product standard (and a maximum mass of less than 4kg), but this unmanned aircraft can be flown to a minimum safe horizontal distance of 30 metres from uninvolved people, or down to 5 metres horizontally when its ‘low speed mode’ is selected. In addition, the remote pilot must have successfully completed an additional competency examination in order to operate in this subcategory.
A3 (Fly ‘far from’ people) – This category covers the more general types of unmanned aircraft operations. The intent is that the unmanned aircraft will only be flown in areas that are clear of uninvolved persons and will not be flown in areas that are used for residential, commercial, industrial or recreational purposes (roughly equivalent to what is currently referred to as a ‘congested area’).
The aircraft classification is also going to become very important
A key element of the Open category is that any unmanned aircraft that are sold for use within this category will also be subject to a set of product standards, similar to the ‘CE’ marking scheme. In order to achieve this standardisation, unmanned aircraft that are intended to be sold within the ‘EU market’ have been further subdivided into 5 ‘classes’. These classes provide a link to the operational subcategories as follows:
Class C0 - (can be flown in all subcategories) Very small unmanned aircraft, including toys, that:
are less than 250g maximum take-off mass
have a maximum speed of 19m/s (approx. 42.5 mph)
are unable to be flown more than 120m (400ft) from the controlling device
Class C1 – (can be flown in all subcategories) Unmanned aircraft that:
are either:
less than 900g maximum take-off mass, or;
are made and perform in a way that if they collide with a human head, the energy
transmitted will be less than 80 Joules
have a maximum speed of 19m/s (approx. 42.5 mph)
designed and constructed so as to minimise injury to people
The standards also cover other aspects such as noise limits, height limits and requirements for
remote identification and geoawareness systems.
Class C2 – (can be flown in subcategory A2 [close to people] or A3 (far from people) Unmanned aircraft that:
are less than 4kg maximum take-off mass
designed and constructed so as to minimise injury to people
are equipped with a low-speed mode’ which limits the maximum speed to 3m/s
(approx. 6.7 mph) when selected by the remote pilot
The standards also cover other aspects such as noise limits (but different from C1), height limits and requirements for remote identification and geoawareness systems, plus additional requirements if it is to be used during tethered flight.
Class C3 – (flown in subcategory A3 [far from people] only) Unmanned aircraft that possess automatic control modes (such as found in typical multicopter ‘drones’) which:
are less than 25kg maximum take-off mass
The standards also cover other aspects covering height limits and requirements for remote identification and geoawareness systems. There are also additional requirements if it is to be used during tethered flight, but there is no specified noise limit (because the aircraft is intended to be flown ‘far from people’).
Class C4 – (flown in subcategory A3 [far from people] only) Unmanned aircraft that do not possess any automation, other than for basic flight stabilisation (and so are more representative of a ‘traditional’ model aircraft) which:
Are less than 25kg maximum take-off mass
A diagrammatic representation of how the subcategories and UAS classes are broken down is below