Here is something to start:
AUR.ACAS.1005 Performance requirement
(1)
The following turbine-powered aeroplanes shall be equipped with collision avoidance logic version 7.1 of ACAS II:
(a)
aeroplanes with a maximum certificated take-off mass exceeding 5 700 kg;
(b)
aeroplanes authorised to carry more than 19 passengers.
(2)
Aircraft not referred to in point 1 which are equipped on a voluntary basis with ACAS II shall have collision avoidance logic version 7.1.
(3)
Point 1 shall not apply to unmanned aircraft systems