Bombardier has been working toward compliance with European Regulation No. 2024/590, which is to manage the substances that deplete the ozone layer. The regulation is currently applicable to EU operated aircraft. 

The Halon 1211 Fire Extinguisher, a known substance to deplete the ozone layer, is going to be replaced by the Halotron® BrX fire extinguisher. This is a next-generation anti-fire agent that is halon-free, designed as a safe and effective replacement for the Halon 1211, and is approved by EASA and EU.

The Halotron BrX fire extinguishers are larger in diameter, so the replacement may require some modification to facilitate the physical size difference of the extinguisher in some instances. 

For example, the replacement of the Cockpit Fire Bottle on the Global Express, Global 5000, and Global XRS looks to be a simple bracket replacement and a replacement fire bottle.

However, the Global 6000, Global 5000 GVFD, Global 5500, and Global 6500 look to be much more of an involved work scope. The emergency equipment box (behind the right crew member seat) will need to be rebuilt and personal breathing equipment will need to be relocated, along with other modifications.  

Applicable aircraft and regulatory status per Bombardier Advisory Wire AW000-26-0031:

Challenger 300/350/3500 – Service bulletins in development (cockpit/cabin); target release November 2025

Challenger 600/601 – Requests on modification via SRPSA (cockpit/cabin)

Challenger 604/605 – Service bulletins in development (cockpit/cabin); target release December 2025

Global Express/XRS – Service Bulletin 700-26-013 (cockpit) released September 26, 2024, and Service Bulletin 700-26-014 (cabin) released May 2025

Global 5000 – Service Bulletin 700-1A11-26-005 (cockpit) released September 26, 2024, and Service Bulletin SB700-1A11-26-006 (cabin) released May 2025

Global Vision 5000 – Service Bulletin 700-26-5004 (cockpit) released September 26, 2024, and Service Bulletin 700-26-5005 (cabin) released May 2025

Global 6000 – Service Bulletin 700-26-6004 (cockpit) released September 26, 2024, and Service Bulletin 700-26-6005 (cabin) released May 2025

Global 5500/6500 – Cockpit Baseline and Service Bulletin 700-26-5501 (cabin) released May 2025

Global 7500 – Cockpit/Cabin Baseline