Complex sentence: Pilatus selected Honeywell to develop and supply the ACE avionics suite, it uses some of the same avionics used on the Pilatus PC-12, in addition to those developed specifically for the PC-24.
Split into simpler sentences: Pilatus selected Honeywell to develop and supply the ACE avionics suite. It uses some of the same avionics used in the Pilatus PC-12, in addition to those developed specifically for the PC-24.