when does a "remain clear" instruction end?

Ahh jeez, Steven... Firstly, because the question was not one for which
there is a pat answer in the AIM, I researched my answer before giving
it... A habit more people on here could benefit from... And, even though I
couched my answer in gentle terms, it is the correct regulatory answer, not
a guess...

As I commented, I don't see specific phrase in the AIM for the controller to
use for clearing an aircraft into the Class C after being told to stand
clear - and it might be a good idea...

But I could still be wrong, so I just polled both the Supervisor of a Class
C airspace, and I polled the supervisor of the Michigan FSDO... Both agree
that the AIM is correct... A pilot is cleared into the class C when the
controller establishes radio contact using the tail number; and does not
instruct him to remain clear... Nothing more is required...

So, on the first call the pilot was told, "Aircraft calling remain clear of
Charlie?, or "November 1234 remain clear of Class Charlie.", or words to
that effect... Fine, we all agree he is to remain clear...
Now the controller calls a bit later and says something to the effect,
"November 1234, radar contact 8 miles east of xyz, altimeter 30 point 00",
or some variation and shuts up - because he has established radio contact
which is 'the clearance to enter'...

So, I asked both, wouldn't you tell the pilot that he is now 'cleared to
enter the C', to avoid confusion.. They both replied that there is no
confusion... The clearance to enter a Class C airspace is establishing radio
contact using the tail number exactly as spelled out in the AIM..
denny

"Steven P. McNicoll" Wrong. Once told to memain clear you must remain
clear until the controller
issues an instruction that permits entry.