“Jam terbang” literally translates to “flight hours” (like how much time a pilot has spent flying).

But as an idiom, it casually means experience or time spent doing something.

Think of it like this:

If someone has “high jam terbang“ (jam terbang tinggi), it means they have a lot of experience and are usually very skilled or knowledgeable in that area.

You use it to talk about someone who is a veteran or has been doing something for a long time, often to highlight their competence.