When to acknowledge ATC

"A Guy Called Tyketto" wrote in message
m...

It's a bit more than that.

If you're working in any sort of Class C or D airspace, his
response to you is in fact clearance into that airspace.


A clearance is not required for VFR operations in Class D or Class C
airspace. If you're operating IFR you had a clearance into that airspace
prior to your call.



So if he
responds, you can fly through unless ATC tells you 'remain outside
Class x Airspace'. Then you must read back something.


You can enter if he responds with your identification. If he doesn't you
have to remain outside, but you don't have to read anything back.



Class B airspace
requires ATC to tell you that you are cleared into it.


Class B airspace requires a clearance to enter, the clearance does not have
to be "Cleared into Class B airspace". If you're on an IFR clearance that
penetrates Class B airspace you're good to go. If you're VFR but have been
cleared for a practice approach that requires entry of Class B airspace
you're good to go.



So if ATC tells
you 'radar contact location, altimeter xx.xx', you're cleared through
that space where he's controlling, establishes 2-way comms, in which
you need to acknowledge that he hears you whether it's a vector he's
given you, or just replying with your callsign, that is all that's
needed.


Say what? You might want to clean that sentence up a bit.