when does a "remain clear" instruction end?

"Steven P. McNicoll" wrote in message
ink.net...

"Travis Marlatte" wrote in message
ink.net...

Steven, just as you said that the previous instructions would not be
explicitly cancelled, so too is the "remain clear." Using the tail
number - especially with the phrase "radar contact" - definitely
makes it for me. I would enter the Class C.


Then you would be operating an aircraft contrary to an ATC instruction in
an
area in which air traffic control is exercised and thus be in violation of
FAR 91.123(b). An instruction to "remain clear" is implicitly overridden
by
an instruction that requires or permits entry of the Class C airspace.
"Fly
heading 110, vector for traffic" would do it, so would "proceed on course"
or "enter a right base for runway 32", but "radar contact" would not.



I don't think so. From the AIM 3-2-4,
3. Arrival or Through Flight Entry Requirements. ...

NOTE-
1. If the controller responds to a radio call with, "(aircraft callsign)
standby," radio communications have been established and the pilot can enter
the Class C airspace.

2. If workload or traffic conditions prevent immediate provision of
Class C services, the controller will inform the pilot to remain outside the
Class C airspace until conditions permit the services to be provided.

3. It is important to understand that if the controller responds to the
initial radio call without using the aircraft identification, radio
communications have not been established and the pilot may not enter the
Class C airspace.

EXAMPLE-
1. [Aircraft callsign] "remain outside the Class Charlie airspace and
standby."

2. "Aircraft calling Dulles approach control, standby."

I think that this makes it pretty clear that any acknowledgement of a
specific aircraft without a specific caution to remain clear is sufficient
radio contact to allow clearance into a Class C. Using your example of a
subsequent instruction implicitly canceling a previous instruction applies
here as well.


-------------------------------
Travis