Radarspotting

Recently I found out two previously unknown hex codes.
My radar alerted me for german airforce traffic and when I found out the hex was unknown I rushed to the airport.

I have a visual, Photographic, and ATC scanner conformation.
And Mode-S data with altitude info from three different receivers

So my resaults are:

3FA8A4=51+01 C160D Transall (confirmed on Oct.19 2013 AND reconfirmed on Oct. 21 2013)
3F8370=51+14 C160D Transall (confirmed on Oct. 21 2013)


The problem is that,
Airframes.org, Gatwick Aviation Society and live-military-mode-s.eu all have those aircraft in its registry, using the wrong hex code.
On all logs I checked those code have never been active. But there is plenty of unknown recent movements for the codes I confirmed.

This makes me wonder why those all those hex "databanks" have the wrong code.

According to Airframes, GAS and live-Mil-Mode-S Those are the hexis for:
51+01 = 3F9981
51+14 = 3F998E

On mode-s mil it says the source for this info is "------ Source: BSIupdates12032006"
What does that tell us?

They may have rolling codes like the USA

kallig,

GAF Transall's in common with some other military aircraft often use "tactical" mode-s codes, usually from a pool of codes allotted to that organization. (The most prolific are USAFE F-15's which sometimes change mode-s codes several times in the same flight and between aircraft in the same area - very confusing).

If you look up 3FA8A4 in live-mil-mode-S you will see that it shows the same airframe as you show as it has obviously been verified by someone today. However 3F8370 is shown as ser 5xxx as nobody has yet verified which airframe it was.

You can submit the information for the aircraft you verified to all three of the organisations so that they can update their records.

Tom

Thank you Tom :)