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ALW: ATZ vs CTR

Old 19th Nov 2018, 17:03
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Question ALW: ATZ vs CTR

Hi Folks, I am an ATPL student an a question just came up. A question which I can't find any answer.

I know that a ATZ is an Air Traffic Zone which maybe controlled in case of a towered ad or uncontrolled in case of anAFIS .

But whats the real difference from a controlled ATZ to a CTR?

Thanks in advance.
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Old 19th Nov 2018, 18:35
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ATZ is smaller than CTR. One or two ATZ could be located within a CTR.
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Old 19th Nov 2018, 20:04
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Originally Posted by maximus610 View Post
ATZ is smaller than CTR. One or two ATZ could be located within a CTR.
So this would be a tower that serves two aerodromes?
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Old 20th Nov 2018, 07:43
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Effectively a CTR has to be controlled by a suitably qualified controller. An ATZ gives the appearance of ‘protection and control’ but may be controlled or, more often, operated by a FISO or Air Ground (or nothing at all).
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Old 20th Nov 2018, 17:38
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ATZ takes the classification of the airspace in which it is located. There are countries like Poland that use ATZ only at uncontrolled airfields. The CTR can have one or more ATZ inside and the floor can indeed start from the ground. It protects departing and arriving traffic.
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Old 20th Nov 2018, 18:11
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Originally Posted by Banana Joe View Post
ATZ takes the classification of the airspace in which it is located. There are countries like Poland that use ATZ only at uncontrolled airfields. The CTR can have one or more ATZ inside and the floor can indeed start from the ground. It protects departing and arriving traffic.
I am starting to understand but how does it protect the traffic? Alerting service? Traffic information guaranteed?
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Old 20th Nov 2018, 20:56
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It's controlled airspace, you need a clearance to enter it, as VFR traffic you need to be in radio contact in airspace class B, C and D. The type of ATC service (separation and traffic information) depends on the airspace class.

Class E can be a mess with VFR traffic and gliders not in radio contact. But this is another matter.
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Old 21st Nov 2018, 09:38
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Originally Posted by Banana Joe View Post
It's controlled airspace, you need a clearance to enter it, as VFR traffic you need to be in radio contact in airspace class B, C and D. The type of ATC service (separation and traffic information) depends on the airspace class.

Class E can be a mess with VFR traffic and gliders not in radio contact. But this is another matter.
As far as I know you can have an uncontrolled ATZ (An AFIS in a small aerodrome for eg)
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Old 21st Nov 2018, 12:01
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An ATZ is not controlled airspace per say.... and you do not have to have a clearance to enter it - merely establish two way comms. As I said earlier and has already been pointed out again, an ATZ can be manned by “Air Ground” who have no authority to control anything.

A control zone zone on the other hand...
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