Squawk 1000 over germany

[smok84]

Hi everyone,

recently when I was flying from to a destionation in western Europe, overhead Germany I got the request to squawk 1000. Now as I understand this has to do with the Mode S we have onboard and that ATC (and all following controllers) can read out all the information from the Mode S she needs, and giving me 1000 opens up my old squawk for another aircraft.

Can someone please confirm that I have the right picture here?
And also I have been trying to look this up in lido, but I cannot find this information.

Thanks for the help!!

[Crazy Voyager]

http://www.pprune.org/atc-issues/484...wk-1000-a.html

As far as I know, yes you've understood it correctly.

[smok84]

Ahh that is good, thanks for the help.
Anyone knows where it is stated in LIDO? or another official document?

[garyscott]

Squawk List
^^^
Any use??

[ATCast]

You've understood it correctly. It is not only in Germany though, a large part of Europe uses conspicuity code A1000 for Mode S flight identification.

Basically there are 3 Mode A code allocation systems in use:

• Originating Region Code Assignment Method (ORCAM)
  Aircraft are assigned a code on departure and will maintain this code until they fly into a region where their code conflicts with another flight. Then it is reassigned.
• Centralised Code Assignment & Management System (CCAMS)
  A computer system allocates codes to flights based on the planned trajectory through the CCAMS area and ensures there will never be a code conflict.
• Elementary Surveillance (ELS),
  If a flight needs to be (re-)assigned a mode A code and it is in Mode S radar coverage and the downlinked aircraft ID correlates with the filed flight ID on the flight plan, code 1000 is assigned. Mode A 1000 serves as a signal to the Flight Data Processing System to correlate the radar track to the flight plan based on the downlinked Mode S aircraft ID instead of the Mode A code. This method is usually used in combination with ORCAM, sometimes with CCAMS.

Google for 'Eurocontrol Aircraft Identification Programme Operational Concept Document'. Eurocontrol have a habit of changing their website paths every other month so I won't post a link, it will likely be dead before you click it.

[smok84]

Thank you so much for the help.
The document states it all very cleary.