Technical Question

[Biggles]

I have just been monitoring PlaneFinder watching arrivals into LPJL and have noticed an error on one landing aircraft which has not shown on any other aircraft.

The following aircraft landed on 09 lined up smack in the middle of the approach and landing on 09, then taxied to a parking slot perfectly as they should.

RYR2MK - EZY15D - RYR4082 ;D

The KLM flight PH-KZT made an approach amongst these arrivals but showed off centre to the right by a long way actually showing as landing on the grass nearer the Tower and taxied to a grassy parking area

So my question is, as aircraft before and after landed normally as shown on Planefinder, could this KLM aircraft actually in real life have a technical problem with a transmitter that apart from allowing me to watch it from the comfort of my chair could show the same error to ATC radar or cockpit information, Does that make sense.

[CloudWarrior]

Hey up Biggles,
This type of anomaly appears on the SBS regularly, I think its just a blip in the software of the SBS and nothing to do with the aircraft, as those sites like planefinder and plane plotter use the information uploaded by SBS users.

[Biggles]

Thanks CW, I thought the signal was collected at the SBS end from information sent from the aircraft equipment and then sent on from the SBS receivers into the "public domain" or am I missing something as I have no real technical knowledge of the whole thing.

[CloudWarrior]

That is correct.
Next time I get a position anomaly I'll get a screen shot. Looking at the SBS forums it is a known problem with the SBS box and nothing to do with the aircraft.

[Biggles]

Thanks again CW

[CloudWarrior]

As you can see from this screenshot, the COA757 is way off course, but like Ive said its a gremlin in the SBS.