On Saturday, September 15, 2018 at 9:26:48 PM UTC-5, Mike Borgelt wrote:

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

Yes but it gets recovered from old equipment and can be used in fire extinguishers in certain applications.

I read a great article once about how the USAF looked into substitutes and there weren't any that did not require twice as much bulk and/or weight for same effect.

Mike

Last Friday I went out for a day of soaring. During my assembly I started both turbines for a pre-flight test. Both turbines started and had normal run ups. After tow out I was ready for takeoff. Once again the turbines started without any issues, during my takeoff roll one of the engines catastrophically failed. The rear turbine wheel exploded and shrapnel was radiated thru the exhaust cone onto my removable turtleneck. The damage to the aircraft was primarily cosmetic but the turbine is totaled.