On Dec 19, 9:32 am, Airbus wrote:
In article ,
says...

So far, no one has proposed an explanation for the +X segments I
mentioned for EWR's Class B. I'm curious to understand the rationale,
if anyone knows.

+XX simply means they want XX to be flyable without transitioning class bravo.

Yes, the meaning of the notation is clear. What's puzzling is the
rationale for the notation.

Without this, most pilots would fly 100 lower

That's the part I don't understand. Even without the +, there's no
*requirement* to be 100' lower (as opposed to, say, 50' lower). True,
many pilots would want to leave about 100' margin of error. But then
why wouldn't they want to do that for a +X floor too? In that case, a
+11 floor lets them fly at 1000', not 1100'--essentially the same as a
plain 11 floor.

On the other hand, if you're *not* leaving a margin of error, then a
+11 floor lets you fly at 1100', whereas a plain 11 floor lets you fly
at 1099'. But you can't control or measure your altitude to that
accuracy anyway. So an extra foot can't plausibly be the motivation
for the +. But I don't see how the + has any other consequence. So I'm
still puzzled about what its motivation could be.