@cockpitking: How Planes Fight Cargo Fires at 35,000ft Hidden deep in every airliner is a cargo fire suppression system armed with halon gas. This powerful agent doesn’t just smother flames — it chemically interrupts combustion, neutralising fires without harming electronics or cargo. At cruising altitude, where oxygen is scarce and evacuation isn’t an option, halon is the ultimate last line of defence. #avgeek #planespotting #pilot #flying #aviation