"Roy Smith" wrote in message
...
"Matt Barrow" wrote:
What would you use for terrain clearance, and what for separation from
other
IFR aircraft?

SIAPs offer terrain clearance, which is why they are mandated.

He's talking about doing an approach without an official SIAP.

Clearances are what offer separation from other aircraft, and are not
available in CGAS. In CGAS, IFR flights are afforded no separation
services from ATC.

Re-read his question.