Thanks a lot! Yeah, your probably right about the recognition lights. I didn't know they existed... And I also didn't know the strobes were considered part of the beacon. Thanks! Leaving the strobes on at the gate or parking position is not intended though. I once spoke to a pilot about it and he said he had just forgotten it. (That was during my internship here... I was instructed to tell the pilot he had left the strobes one...)

Thanks again for the answer!

All the best
Jakob