I can assure you that it's a translation of a draft (not published) written in the native language of the country
Or .. if it's not a translation .. this mean that all the investigators and administrative personnel involved have english as mother language ... and this is practically impossible

Going by your own logic, since you are from Germany, then, did you write your reply to this post in German and then translate it to English before posting? Or did you learn how to speak English and therefore are capable of independently reading and writing in English? Anyway, this is getting off topic. The fact of the matter is, the NTSC has published one report and it is in English. And the same goes for all other aviation incident and accident reports I've read from the NTSC in recent times.

Actually I would replace those with something a lot more basic - something not connected with a mere 'chance':

If the crew had a map of terrain they were flying over. There was a navigator aboard and he did not even bother to have an aeronautical chart of the area, makes you wonder what he was paid for. :\

plus the fact that they'd been in the same rough area earlier in the day - those volcanoes are BIG and can be seen in the morning fro well over 100 kms away

to go low level in cloudy conditions when you know there are big mountains around is pretty stupid

Once again my apologies, although, with respect, the grammar is somewhat wanting.

I was wondering that one too, as the report indicates they had only an High altitude en route IFR map not showing terrain, and not a visual map .

But if you read the CVR carefully , from 07:30 44 the Capt says " No problem with terrain at this moment " the guest replies : yeah , it is flat " could indicate the Capt knew there was terrain around.
They only planned to fly 20NM around the VOR and there is indeed no problem in that area.
What was not planned is the fact that the aircraft left the plannned orbit which was above flat ground unoticed by the crew.(demonstrating a Holding input on the FMC ) and headed towards teh mountain.
The rest of the conversations show a crew confused as to which heading they should take to return to Halim , which ironically is also the location of the VOR they are tuned on !
Difficult to understand .

No!

Not at all.

Can't maintain VFR?

Pull up.

Hetfield : You mean VMC surely. But it is irrelevant as they were flying IFR and never announced/requested to continue visually.

What I meant by "Difficult to understand" was in relation to my last sentence : Why they were confused as to where to go to get back and did not notice the aircraft flew the opposite direction they wanted to with a VOR tuned on the airfield.

Why the accident occurred is obvious and easy to understand after reading the report

"Once again my apologies, although, with respect, the grammar is somewhat wanting."

so is my Indonesian.............