What is the coldest temperature you've flown in?

[Lindamon]

I ferried an unheated Pitts S2B to Afton Wyoming around twenty years ago. The day I landed in Afton, Jackson Hole was reporting 25 below. It was probably colder at 12500 as I was crossing the mountains. Because the oil breather tube that goes to the tail in most aerobatic aircraft was unvented, I blew the seals on the engine and made a real mess. I'm not sure why I agreed to that flight at that time of year.

[Neal@F14]

Originally Posted by jjhoneck

Yep. The location varies somewhat from model to model, but it's always on the hot side of the firewall.

In the Cherokee 140, the gascolator and electric boost pump are on the engine side of the firewall, BUT they are housed inside a metal box-like structure that seals them away from the engine heat plus that box is fed via a 2" SCAT duct to a forward-facing air scoop on the bottom of the lower cowl to force-feed ram air into the box to keep the gascolator and boost pump cool, to help mitigate chances of vapor lock. In extremely cold weather, it's going to get mighty chilly inside there