Originally Posted by
Capn Bloggs
Balloon's link shows me that the yanks have exactly the same Galapagos "levels not available when QNH is yada yada yada" system that we have.
Bloggsie,
Please read it again, they are NOT the same, the US has no transition layer.
As for the "other details" from the US AIP, (or the AIM) take a closer look at the altimeter settings.
Tootle pip!!