Originally Posted by
vilas
Tdracer
While there is no doubt that Checklist should always be done and are done but perhaps you could shed some light when the checklist goes silent after the second agent discharge and the fire is not out. Although not many incidents but why would it happen and how serious would be the implications. Thanks
Sorry, but in that regard you're well out of my area of expertise.
Max Angle - some sort of Halon compound is the most common extinguishing agent for aircraft engines. However Halon is considered environmentally nasty and new stuff hasn't been made for many years. Hence some new installations use more environmentally friendly agents - the KC-46 uses something that's basically baking soda.
I've never heard any concerns regarding the effectiveness of Halon - only concerns about it's environmental impact - the stuff seems to work quite well. The newer stuff I'm not so sure about - although my coworkers responsible for fire safety didn't seem overly concerned.