AMS, what are they doing?

[AirMe]

AMS... What doing..png
AMS... What doing 2..png
What are they doing this planes? Are 4:30am... Do you know?

P.S.: I take this opportunity to greet everyone as they are new to the forum

[Oblivian]

48425C
Vehicle
Amsterdam
LD LIGHT
KLM TUG

Possibly just testing its gear on ground by towing it around.

[Maxime]

What you see are ground vehicles moving around. OH = 'Onderhoud' which is Dutch for maintenance vehicle and LD is a tug (push back vehicle) which is probably just at work. Still a lot to be done at Schiphol Airport (AMS) at nightly hours.

What I'm wondering about is why I was able to see plenty of those ground vehicles at AMS the last couple of days, but since today they don't seem to be shown on Flightradar24 anymore? Too bad because I like following all the movements on the ground, both for planes and ground vehicles, via FR24 and my scanner.

[Anmer]

What I'm wondering about is why I was able to see plenty of those ground vehicles at AMS the last couple of days, but since today they don't seem to be shown on Flightradar24 anymore?

It's possible that the feeder that's close to the airport to receive ground vehicles isn't online.