Spring clams? Shame on you.
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Why?

Al mentioned the small area possibly damaging the hose, but they are
easily had that are made from flat spring.  They are used in everything
from cars to washing machines, providing years of service without even a
seeping of water.  When I try to get one off that has been on for a few
years, it is generally a fight to remove the clamp, then it's generally
a no-holds-barred brawl to get the hose off the nipple.  I've never seen
one fail by letting go or cutting the hose in any the junkers that I've
driven or been responsible for keeping up over the years.

Considering that the laws of physics don't change just because the
wheels leave the ground, what mechanism will make the spring clamps let
go in an airplane when they don't let go in any of the other situations?

 

It should have been clamps, not "clams" Sorry.

 

It was a joke.......There are just about no rules in home building. It is an "anything goes" situation until the inspector gets there. And then it can be anything from MIL-Spec everything, to anything goes again.

 

My first year at the Sun&Fun fly-in, I saw vinyl garden hose and spring clamps in several applications. So, either the inspector didn't see it or it had never been inspected, or it had been and the inspector thought it was acceptable for aircraft use.

 

Time and time again, experienced people place themselves in situations where another second or two of engine power, is the difference between an interesting story, and a heart wrenching tragedy. Last fall two pilots, in a borrowed Bonanza, hit the edge of a ditch off the end of a long runway. No engine power left to manage. Another 12 inches of altitude. Another second of power and they could have been explaining this story to the FAA or plane owner, or others at the next meeting. They lived for weeks with terrible injuries, and both died leaving behind astounding medical bills and shattered families. 

 

Spring clamps are acceptable on vacuum hoses to power some back up gages. 

 

Lynn E. Hanover