"Ray Andraka" wrote in message
...
Can you point to a reg tht says that? I don't think it is true. Mine
was
IFR certified when I bought it, and it did not have alternate static
(I've
since added it). Also the FAA materials for the IFR written mention
several
times that breaking the VSI glass is the way to get alternate static
on an
airplane that doesn't have a valve.

That might work if the cabin was unpressurised, depends on whether the
guage face
was vented to the static side of the pressure balance.

I wouldn't think they'd make such a big
deal about it if an alternate static source was requried for IFR cert.

Ah, in Australia mate. I can't quote the ANO/R off the top of my head
but
to be certified for Class 1 it needs an alternate static source IIRC.
I'll see if
I can find the ANO/R somewhere.
(ANO= Air Navigation Order ANR= Air Navigation Regulation)

I can't speak for the FAA, so if they don't require alternate static
source for
Class 1 IFR I'm rather surprised, but I guess it could be the case, I
don't know.

Class 4 IFR (NVMC) doesn't require it in Oz.

The CO