C206 shown as glider

[PE2G]

Hello,

Today, I noticed a 'glider' on Planefinder.net and its data were coming from FLARM. However, the aircraft was flying a straight east-west pattern at 120 - 130 knots. So, it couldn't be a glider:



When it was overhead here, I could visually identify it as D-EIHW. This is a (non-military) C206 operated by BSF Swissphoto as an aerial survey aircraft.

In my Plane Finder Client it was shown as Mode A/C only:



I know this aircraft is Mode-S ADS-B equipped, since I've seen it before with full ADS-B data on other tracking sites. Are this aircraft's ADS-B data not shown intentionally?

Thanks for the info.

Cheers,
Frits PE2G

 

[Lee Armstrong]

Hello,

Today, I noticed a 'glider' on Planefinder.net and its data were coming from FLARM. However, the aircraft was flying a straight east-west pattern at 120 - 130 knots. So, it couldn't be a glider:

View attachment 2526

When it was overhead here, I could visually identify it as D-EIHW. This is a (non-military) C206 operated by BSF Swissphoto as an aerial survey aircraft.

In my Plane Finder Client it was shown as Mode A/C only:

View attachment 2527

I know this aircraft is Mode-S ADS-B equipped, since I've seen it before with full ADS-B data on other tracking sites. Are this aircraft's ADS-B data not shown intentionally?

Thanks for the info.

Cheers,
Frits PE2G

Hello Frits,

It is ModeS but not ADS-B so it does not plot on the map.

There is a chance we may MLAT it but on this occasion it appears we have not.

We don't get full info via FLARM so we assume that it is a gilder.

Lee

 

[PE2G]

Thanks for your reply, Lee.

Could you shed some light on the criteria when Plane Finder will or won't MLAT non-ADS-B aircraft?

Thanks again,
Frits

 

[Lee Armstrong]

Quite simple really. We need 3 or more Plane Finder Radar units to be able to see the aircraft in question.