(10)Commission Implementing Regulation (EU) 2021/255note amending Implementing Regulation (EU) 2015/1998 introduced a new road map for the progressive completion of the installation of standard 3 explosive detection systems (EDS) equipment for the screening of hold baggage at European airports, adding the necessary flexibility due to the COVID-19 pandemic. In elaborating such roadmap, a similar additional flexibility from 1 September 2021 was not granted, by mistake, to operators still using standard 2 EDS equipment for the screening of cargo and mail. The appropriate authorities should be given the possibility to allow a reasonable extension of the use of standard 2 EDS also to operators engaged in the screening of cargo and mail.