SID & STAR clearance
I've seeing different opinions regarding this issue...
Let's suppose you're performing a STAR that has this minimum altitudes for each waypoint:
A: FL180
B: FL100
C: FL060
Once you've passed WPT "A", ATC clears you to FL080. My question is: do you still have to pass WPT "B" at or above FL100?
In the same way, what if you have altitude restrictions in a SID? For instance, if you had a SID from "C" to "A" using the altitude examples as maximum ones - when cleared to FL 330, would you respect the FL's or would you climb irrestrictly?
Best regards,
PP