"Remain outside controlled airspace ..."
PPRuNe Radar, et al, maybe we can nail this one, once and for all ...
I find that MATS Part 1 is definitive about this and says under Section 3 (Approach Services), Chapter 1 (Approach Control), para 21 (p.15):
21 Joining and Overflying Aircraft
When an aircraft requests permission to enter controlled airspace for the purposes of landing at the associated aerodrome or transiting the airspace, it may not be possible, for traffic reasons, to issue that clearance immediately. In such situations controllers shall advise the pilot to remain outside controlled airspace, when to expect clearance and give a time check.
It seems therefore that, after the initial call, if ATC does not have the time to respond more fully, there are two options:
1. If there is a stated or implied request to enter CAS, the reply should conform fully to the above and include a time of expected clearance and a time check ... or,
2. If there is no stated or implied request to enter CAS, a simple "Stand-By" should suffice.
... nuff said?
JD
