Tue Jul 09, 2019 11:36 am #1704940
skydriller wrote:gaznav wrote:Finally, the sunlit uplands of ADS-B are not that far off at all. The take up of various forms of ADS-B in the UK, Europe and the USA is huge - the US now have 90,986 ADS-B Out aircraft with 64,959 fixed wing GA aircraft amongst that figure (FAA figures from 1 Jul 19).
I wish you'd stop coming out with this as it just isnt true.
Firstly, ADSB is mandatory in the US. Hence the numbers there.
As for Europe and the UK, certainly in my bit of Europe the only time I ever see an ADSB equipped aeroplane on the likes of FR24 etc is if its an airliner. There are very, very few GA aeroplanes using ADSB because the french were late in their Mode S derogation and everybody went out and installed Mode S, so pretty much the only F-reg GA seen on FR24 are MLAT ModeS derived flights.
I know you dont want to hear it, but you are the odd one out in having ADSB-out and no Transponder - In some utopian panacea 10years down the road you may well be right, but this is the reality right now.
If I go flying with a device that only detects ADS-B Out then I normally see at least half a dozen training aircraft flying around Oxford/Kidlington, and at least double that floating around the Vale of Aylesbury. Looking at some screenshots I went flying for 30 minutes on 11 Jan 19 and in that time, within 15 miles my aircraft, I saw 6x Oxford GA training traffic (OXF22, OXF56T, etc...), G-BDFR, G-HMCF, G-EDGA, G-SBOL, G-ATXD, G-MICI, G-CEAR and myself in G-AVOH - all GA aircraft that were emitting ADS-B. There were also countless Commercial Air Transport (CAT) aircraft flying too (at least a dozen seen within a similar distance).
So on a mid-winter week day (not weekend), within 30 minutes, I saw 13x ADS-B Out GA aircraft (excluding mine) within 15 miles of me during a 30 minute sortie. Plus lots more CAT which would be of use if I was flying near Class D or a range of busy regional airports. On a busy flying day I often see more. So I am not sure how you can say “it just isn’t true” about ADS-B Out and GA aircraft? It would be interesting to see stats of exactly how many UK ADS-B Out GA aircraft there now is - I wonder if Airspace4All have those figures?
How many P3i did I detect - none (as I don’t have a PAW and only that will detect P3i). How many FLARM - none (it was a Carp day for gliding!).