On Friday, September 14, 2018 at 9:58:34 AM UTC-7, wrote:

The production of Halon ceased January 1, 1994, at least in the States.

There a substitutes like Halotron that work well to put out turbine fires.

I've bought and had installed one of these systems since then. It is in ASH26E #26012.
Features list includes: MIL-SPEC quality Halon 1211 or 1301.
Available at Aircraft Spruce, but for horizontal mounting in gliders you need a dip tube similar to aerobatic fuel tanks. Spruce can't do that, Safecraft can.
Jim

https://safecraft.com/aviation/

https://www.aircraftspruce.com/categ...re_yspace.html