KLM A332 stranded @ BON
 

I'm curious to the fact I can't find any data on this, so I thought to try here :)

My mother arrived yesterday (28-11) on the KL765 from AMS to BON via AUA. I was a little bit worried since I saw a fire truck next to the runway when it landed, only to see nothing happened. But when the plane arrived at parking, they were investigating the tires on the plane and it took almost 10 minutes before the stairs could be set up against the plane for disembarking the passengers.

On the plane nothing was said, but just before landing instead of dimming the lights for landing at night, the cabin lights were all on. Also the crew were disembarking, which was weird because the crew was just fresh from AUA.

So when I showed my mom the island today, I saw the A322 still standing at BON airport to find out it didn't leave. There is a malfunction and there waiting for a part, but can't find anywhere what the real problem was. I thought it was weird that a fire truck was standby next to the strip, but nothing was said to the passengers on the plane....

Plane should be leaving today, but as of 20:00 local time the plane was still at parking stand.

That's normal - I know this from chatting to the crew on our recent visit. The crew from AMS gets off in AUA. The previous day's crew gets on it AUA for the short hop to BON. There is another crew change at BON for the flight back to AMS.

This will have been what's known as a "local standby" - the lowest form of alert. You call a local standby for minor problems which are unlikely to turn into an emergency. The crew may not not even have known that ATC decided to call a local standby - it's entirely at ATC's discretion. It's a precaution.