Mode S transponder display to ATC?

Is it normal practice for a Mode S transponder to display the aircraft
tail number to ATC?

I ask because I thought it did, but recently on flight following the
controller seemed to have difficulty getting my number correct over
the radio.

paul kgyy wrote:

Is it normal practice for a Mode S transponder to display the aircraft
tail number to ATC?



No.

"Steven P. McNicoll" wrote in message
m...
paul kgyy wrote:

Is it normal practice for a Mode S transponder to display the aircraft
tail number to ATC?



No.

It isn't displayed to controllers, but a ModeS transponder does transmit its
serial number which can be read using tools not available to the controller.
The serial number does translate to the N number so long as the transponder
is correctly registered. As of now this technology hasn't been implemented
to the controller, nor is the serial number recorded in the continuous data
recording archive.

On Thu, 04 Sep 2008 21:28:24 GMT, "Mike" wrote:

"Steven P. McNicoll" wrote in message
om...
paul kgyy wrote:

Is it normal practice for a Mode S transponder to display the aircraft
tail number to ATC?



No.

It isn't displayed to controllers, but a ModeS transponder does transmit its
serial number which can be read using tools not available to the controller.
The serial number does translate to the N number so long as the transponder
is correctly registered. As of now this technology hasn't been implemented
to the controller, nor is the serial number recorded in the continuous data
recording archive.

Doesn't the system process the flightid field? Or isn't that
transmitted?

"Peter Clark" wrote in message
...
On Thu, 04 Sep 2008 21:28:24 GMT, "Mike" wrote:

"Steven P. McNicoll" wrote in message
news:TMOdnSYGZc1D0F3VnZ2dnUVZ_gadnZ2d@earthlink. com...
paul kgyy wrote:

Is it normal practice for a Mode S transponder to display the aircraft
tail number to ATC?



No.

It isn't displayed to controllers, but a ModeS transponder does transmit
its
serial number which can be read using tools not available to the
controller.
The serial number does translate to the N number so long as the
transponder
is correctly registered. As of now this technology hasn't been
implemented
to the controller, nor is the serial number recorded in the continuous
data
recording archive.

Doesn't the system process the flightid field? Or isn't that
transmitted?

I'm not sure what "system" or "field" you're referring. The computers at
the centers and tracons have no idea if the transponder is ModeS or not.
They only process the beacon code and display the ACID that's in the flight
plan.

In article Pe%vk.431$Dj1.271@trnddc02, "Mike" wrote:

I'm not sure what "system" or "field" you're referring. The computers at
the centers and tracons have no idea if the transponder is ModeS or not.
They only process the beacon code and display the ACID that's in the flight
plan.

The centers and tracons don't have Mode S radars yet?

--
Bob Noel
(goodness, please trim replies!!!)

Peter,

Doesn't the system process the flightid field?

Some do. In Europe, more and more do.

Or isn't that
transmitted?

It certainly is.

--
Thomas Borchert (EDDH)

Thomas Borchert wrote:
Peter,


Doesn't the system process the flightid field?


Some do. In Europe, more and more do.


Or isn't that
transmitted?


It certainly is.


Not in the U.S.

Paul,

Is it normal practice for a Mode S transponder to display the aircraft
tail number to ATC?


Mode S transponder have the option of setting a flight ID or the tail
number in a data field designated for that info. This is broadcast with
the Mode S data packet and is independent of the unique transponder hex
code. In airline operations, the flight crew normally sets the flight ID
for each flight, e.g. UA011 for United flight 011. In GA operations, the
aircraft tailnumber is set by the installer.

Controllers with mode S radar equipment have the option of displaying
this data field next to the "blip". I do not know how common such
equipment is in the US, but it is getting more and more widespread in
Europe.

In central Europe, where Mode S recently became mandatory, ATC does not
yet rely on that data field for aircraft identification, however. They
say the percentage of erroneous (sp?) entries in that data field is so
high that it can't be relied upon. Thus, when I do an IFR pickup, I
still get a squawk and are radar identified by that squawk, even though
the controller would be able to see my call sign directly on his screen.
In fact, the controller DOES see it on his screen, which I have verified
by asking them.

AFAIK, the big database correlating call signs and hex codes inside the
radar equipment is a myth.

--
Thomas Borchert (EDDH)

"Thomas Borchert" wrote in message
...
Paul,

Is it normal practice for a Mode S transponder to display the aircraft
tail number to ATC?


Mode S transponder have the option of setting a flight ID or the tail
number in a data field designated for that info. This is broadcast with
the Mode S data packet and is independent of the unique transponder hex
code. In airline operations, the flight crew normally sets the flight ID
for each flight, e.g. UA011 for United flight 011. In GA operations, the
aircraft tailnumber is set by the installer.

Controllers with mode S radar equipment have the option of displaying
this data field next to the "blip". I do not know how common such
equipment is in the US, but it is getting more and more widespread in
Europe.

It doesn't exist anywhere in the US. I seriously doubt it will ever be
implemented as ADS-B which has a much more robust datalink capability will
be the shape of things to come.