Toobuilder
Well Known Member
Not going to rehash the debate concerning what's better, But I will say that if you are not comfortable with a particular method, then dont use it. Personally, I replace every hose I can with hard line. Hose is only used on my airplanes where there is relative movement. I have many years and hours across several airplanes doing it with no failures....While some of the exact failure modes are not known there have been a number of fatal accidents due to fuel plumbing...
Use the method that meets requirements, fabricate and install the components correctly, and inspect regularly. That's aircraft design 101.