Originally Posted by
Vessbot
2) The particular example being that they were cleared with the verbiage of "cleared" (and not "descend via,") which according to your reference should give an answer of can not descend; but controller in the story gave an answer of yes, descend.
But they were cleared for the RNP W 30
APPROACH, which implies that you can leave 6000ft after HADAS because that is the IAF.
It would be a different story if they would have just said "you are cleared for the AMMOS 1E
ARRIVAL" when he was in FL 200. Then nobody could expect him to leave that altitude.