15-20 seems a bit excessive at second look, apologies, first thought about KSEE which is 13 nm from MZB. Also KSBA has 14 nm to GVO. Wasn't aware the MSAs didn't provide required obstacle clearance, even though I've never used them for any operational purpose (in US). But I agree they don't provide much usefulness for any accurate terrain assessment in SoCal. Especially not for my type of flying machine.
Last edited by 172_driver; 21st December 2011 at 13:31.