Do you really want this in your propeller TKS system?

How do you prevent your windscreen from freezing? Choices, choices…

Propylene glycol is very similar to ethylene glycol. For use in systems like TKS, the two most important characteristics would be corrosivity and viscosity. Neither is corrosive, and their viscosity at cockpit temperatures is about the same. A significant difference in viscosity appears at very low temperatures (like below –15°C), but that’s where icing is rarely a factor.

On a different note, ethyl alcohol was used in deicing systems for decades, and I suspect the only reason why it isn’t used today is the abuse potential. Soviet aircraft used it all the way until the advent of electric deicing systems. Allegedly, in the era of WW2, someone proposed to switch to a different fluid to prevent ground personnel from getting drunk, but the idea was quickly abandoned as it was obvious they’d still try to drink it, and a drunk mechanic is better than a dead mechanic.

You know that urea is also a very effective anti-ice substance? Maybe that would be a good use for all those bottles you proudly carry on your 7h legs?

Somehow urea doesn’t sound like something I’d like having coming out of my heater, either!

I read about the new warning labels in ‘welt kompakt’ in Frankfurt.
This is a worldwide change in labeling. They have changed the standards what to label and how.
According to the article it looks all worse than before as they have taken the most stringent labeling from US.

Thanks for sharing that…

I use a peach ice tea bottle. Someone asked me in Coventry, why I would chuck away a half full bottle of iced tea. The colour is nearly the same. lol