The use of Hand-held fire extinguishers containing Halon in Aircraft will become prohibited end of 2025 and you will need to replace all them.

Cabin Interior "Quick Conversion" kits, installing either AAT AirAmbulance Equipment or AAT Mission Equipment cabin layout configurationsNote: This STC is a superseding revision of EASA.R.S.00461 Rev. 2,underlining Associated Technical Documentation updates. EASA.R.S.00461