Very Low Level Flight Rules for Manned and Unmanned Aircraft Operations
Journal of Intelligent & Robotic Systems
(2024) 110:82
https://doi.org/10.1007/s10846-024-02084-5
REGULAR PAPER
Very Low Level Flight Rules for Manned and Unmanned Aircraft
Operations
Anna Konert1
· Piotr Kasprzyk1
Received: 8 December 2023 / Accepted: 29 February 2024
© The Author(s) 2024
Abstract
An analysis of the development of legal regulations regarding unmanned civil aviation leads to the conclusion that the current air traffic rules are among the key issues that require amending. Are drones allowed to fly at any height? Can drones fly
freely over a person’s house or garden, several meters above the ground? What is the minimum allowable height for drone
flights? The method of study consisted of content analysis of the existing legislation. Current doctrines were confronted with
the existing regulations, documents, materials, safety reports, and statistics. The results of the study show that the existing
air traffic rules, precisely in the case of aircraft operations performed by manned and unmanned aviation at very low heights,
are definitely practical in nature. First, in most countries violations of air traffic rules are prohibited acts subject to criminal
penalty. Second, determining the principles of air traffic for air operations is of crucial importance for determining legally
permissible interference in property ownership. The urban air mobility is outside the scope of this research.
Keywords Very low level flight rules · Manned aircraft operations · Unmanned aircraft operations · Aviation regulations ·
Unmanned aircraft regulations
1 The Development of Legal Regulations
in Unmanned Aviation
It is quite obvious that unmanned aircraft is aircraft as per
the legal regulations concerning aviation safety [1, 2]. The
fundamental differences between manned and unmanned
aircraft suggest that the term ‘unmanned aircraft system’
(UAS) is more appropriate [3, 4]. Such a system comprises
not only the aircraft itself but also the instruments and solutions that are meant to ensure that a UAS pilot remains in
control of the operation being performed [5] and that the
pilot has the necessary situational awareness of the environment in which the UAS operation is performed, in particular
of the air traffic in the airspace. Legal regulations regarding
UAS operations must, by definition, take into consideration
the specificity of unmanned aviation operations [2]. The differences between manned and unmanned aircraft operations
* Anna Konert
Piotr Kasprzyk
1
are so significant that a substantial part of the existing regulations regarding air operations will not be applicable at
all to unmanned aircraft operations, while an even larger
part requires essential modifications directed at unmanned
aircraft operations. A study conducted in 2007 in the USA
estimated that among the existing air safety regulations: 1)
30% may be applied in current form to unmanned aircraft;
2) 54% may be applied to unmanned aircraft regulations but
with necessary amendments; 3) 16% may not be applied to
unmanned aircraft at all [5]. This was, of course, a starting
point to develop new regulations in the last 15 years. Within
aviation law, the legal regulations regarding unmanned aircraft are being developed on three levels: at the international level, where the standards and recommended practices comprised in annexes to the Chicago Convention, as
adopted by the ICAO, play a crucial role; at the national
level, where these standards and recommended practices
are implemented according to the legal system of a country in the appropriate legal acts of national law; and at the
supranational level which is especially relevant in the case
of European Union member states where the competence of
determining aviation safety legislation has been delegated
to the EU, in addition to the establishment of a specialized
Lazarski University, Warsaw, Poland
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body, namely the European Union Aviation Safety Agency
(EASA) [2, 6–8].
Accordingly, a permanent panel called the Remotely
Piloted Aircraft Systems Panel has been entrusted with the
task of developing a regulatory framework at the ICAO
level. The Panel’s work resulted in further amendments
to Chicago Convention annexes. The first amendments to
Annex 1 Personnel Licensing were adopted as early as in
2018 and introduced a new type of licence, i.e. remote pilot
licence. In 2021, amendments were adopted to Annex 8 Airworthiness of Aircraft, regulating certificate requirements
for UAS. A new volume was also adopted to be incorporated
in Annex 10 Aeronautical Telecommunications: Volume
VI – Communication Systems and Procedures Relating to
Remotely Piloted Aircraft Systems C2 Link. Furthermore,
work is well underway to establish a new volume to be
incorporated in Annex 6 regarding air operations, a volume
dedicated to unmanned aircraft operations. At the same time,
amendments to Annex 11 (Air Traffic Services) and Annex
2 (Rules of the Air) are also being developed.
At the EU level, the decision laid out in the Civil Aviation Strategy of 2015 [9] to incorporate unmanned aircraft
in common air safety rules was of key importance. The basic
regulation, i.e. Regulation (EU) 2018/1139 of the European
Parliament and of the Council of 4 July 2018 on common
rules in the field of civil aviation provided the legal basis and
framework for the adoption of implementing rules. The most
essential of these were two regulations which entered into
force on 31 December 2020, namely Commission Implementing Regulation (EU) 2019/947 of 24 May 2019 on the
rules and procedures for the operation of unmanned aircraft,
and Commission Delegated Regulation (EU) 2019/945 of
12 March 2019 on unmanned aircraft systems and on thirdcountry operators of unmanned aircraft systems. Regulation
2019/945 contains detailed provisions regarding the design
and manufacturing of those UAS that are intended for use
within the ‘open’ category. Meanwhile, Regulation 2019/947
lays down detailed provisions concerning operations in the
‘open’ and ‘specific’ categories, including requirements for
UAS pilots and operators. Moreover, the legal framework
for the U-space was adopted in 2021. Commission Implementing Regulation (EU) 2021/664 of 22 April 2021 on a
regulatory framework for the U-space, aimed at facilitating
the safe and effective integration of manned and unmanned
aviation entered into force on 26 January 2023 [10].
2 Air Traffic Rules: Introduction
An analysis of the development of the legal regulations concerning unmanned civil aviation leads to the conclusion that
one of the key issues requiring amendments are the current air traffic rules [4]. Three different aspects should be
Journal of Intelligent & Robotic Systems
(2024) 110:82
considered. First, air traffic rules for UAS operations must be
determined, especially during very low level flights. Second,
the emergence of UAS operations affects manned aviation
air traffic rules, especially in the context of m (...truncated)