Peter wrote:
I am aware that in the US the FAA is checking these emissions and emailing owners whose ADS-B OUT is noncompliant, but I don’t think anybody in Europe is doing any monitoring whatsoever.
Although true, I was not referring to FAA enforcement. A non compliant source is not going to emit geometric altitude, NACp, NACv, or NIC and in effect self declares the source is emitting an untrustworthy position. Any ATC use or certified traffic display use will take this into consideration. A portable device won’t care.
Peter wrote:
No European ATC can see ADS-B at all, AFAIK
Certainly Stockholm ACC/TMC can see ADS-B.
but the ADS-B output will be immediately identifiable as not being connected to a compatible position source
I am aware that in the US the FAA is checking these emissions and emailing owners whose ADS-B OUT is noncompliant, but I don’t think anybody in Europe is doing any monitoring whatsoever.
No European ATC can see ADS-B at all, AFAIK, except maybe in some limited local experiment. Some airfields have rigged up a laptop with a UHF receiver so they can see [some proportion of] local traffic, etc.
This is what enables EASA / the national CAAs to offer these concessions. Nobody cares what comes out of your transponder. ATC can see the standard Mode A/C/S and that’s it.
And there is a lot of promotion of “handheld” gadgets for EC (electronic conspicuity) – you can fill your boots e.g. here 
Steve6443 wrote:
The transponder manufacturer must state that it will work with your particular GPS. Applicable to non-complex aircraft with a cruise speed less than 250 knots, or any ELA2 aircraft.
The reason for this statement is that the data elements needed for ADS-B Out to function are not supported by most legacy GPS systems. One can connect a GTX330 via a variety of means to a GNS430, but the ADS-B output will be immediately identifiable as not being connected to a compatible position source. Will it emit your position, sure. Will it emit the other elements required but never mentioned, not so much. ADS-B is much more than position. So the needed data elements have to be generated by the position source and the ADS-B Out system has to be coded to parse and accept the data elements from the position source. Legacy GPS systems such as the non WAAS GNS430 or KLN94 simply don’t provide all the data, so what is missing gets set to null or unknown. Could they provide that data, sure, but that will never happen for outdated and no longer supported avionics.
CS-STAN issue 3 has come out. Local copy. May be 1 year old news…
This just turned up on email:
Please note that the final deliverable ‘Regular update of the certification specifications for standard changes & standard repairs (CS-STAN) – Issue 3’, as well as the related CRD to NPA 2018-10 , have been published on the EASA website.
Ah, I see – thanks!
Cobalt wrote:
It is worth noting that this CS-STAN only applies to SIL-0, not “proper” ASB-out installations
There are two proposed new CS-STANs for ADS-B installations, CS-SC005a and CS-SC006a. The one I described is CS-SC005a which allows for a “proper” ADS-B installation. The other one, CS-SC006a, concerns ADS-B installations for the purpose of “airborne awarness” in GA aircraft. It doesn’t require the manufacturer statement of compatibility, but it also only allows SIL-1 (not SIL-0).
It is worth noting that this CS-STAN only applies to SIL-0, not “proper” ASB-out installations
Steve6443 wrote:
Because Garmin will not allow any GPS source to be connected to their GTX 330 and confirm it works except one which costs north of 4K installed. The wording there means that the equipment manufacturer has to confirm that the GPS source will work with the transponder. In my case, the 430s non WAAS are not accurate enough to allow ADS-B out, the only options would be something like a GTN650, IFD440, 430w upgrade or fitting of an approved source. Approved by Garmin.No, it does not mean that!
It means that if you want to make an ADS-B installation without a STC or change approval from EASA, then the manufacturer indeed has to confirm. But right now, you can’t make an ADS-B installation at all without a STC or change approval. So it might be that the revision to CS-STAN is not helpful in your case, but it doesn’t make anything worse.
You are not forced to do things according to CS-STAN. It gives opportunities to make some things easier.
