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Message
So the question is, do most of you have an alternate air source
in your intake system? Did the FAA inspector or DAR specifically look for
it?
Hi
Bob,
This is a pretty timely
question, since I'm working on this decision for the RV-8. First,
I've never had alt air on any of the planes I've built, and I don't think
there's any chance my DAR would give me a hard time for not installing it
now. Van's didn't even make any provision for it until just a year or
so ago, when they came out with an alt air mod, then a new mod because the first
one didn't work so well.
On one hand, I am
thinking that I've never had it, and don't need it now. On the other hand,
I can easily see how it
could be needed. Van finally added it after at least a couple RV's went
down due to freezing rain, or snow blocking up the air filter. Even
in the RV's with carb heat, there isn't enough heat generated by the crappy
factory system to melt the blockage, particularly if you're late applying
it.
Bottom line is that I
think it's a good idea if you have a filtered system fed by a ram air
scoop.
Cheers,
Rusty
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