Originally Posted by
Check Airman
Yes it is. In Europe and some other parts of the world, TA can vary, and is quite low. I hesitate to say that in the US, our system is better, but it's certainly simpler, and thus less prone to error.
I've heard talk about simplifying it to a single level for years now. What could possibly be so difficult? Look at the highest terrain in the region, and set it a few thousand feet above that.
Yeah, flew for a few years in turboprops without any RNAV in Europe, was always fun flying low between Belfast, Isle-of-man and Liverpool , trying to figure out when you went from 4.000ft to FL040....
I know you have to set local QNH the for lower level flights in the USA, but the differences between area altimeter settings are most often a lot smaller than between QNH and QNE.