nortwinds
You clearly know nothing about the background of the Captain involved in this incident.
If indeed it was a Pilot induced incident ie suicide and mass murder then the finger would point 100% towards the Captain for the followng reasons.
1) He was deep in debt and had huge " loss of face" because of this.
2) He had recently been demoted from Line Training Pilot because of a dive bomb approach into an airfield and where he tried to cover it up by pulling the very same CB's behind his seat that could have been pulled again thus destroying any evidence.
Again this was a huge loss of face and probably screwed his chances of ever getting over to Mainline SQ
3) It was the 10th anniversary of an A4 formation he was leading back in his RSAF days and he turned back due to a technical problem and his mates all flew into a hillside and were killed.
Opinion is divided as to the causes of this incident and the Indonesian authorities were ill equipped to deal with this enquiry and at the time Indonesia were being bankrolled by Singapore so some people reckon the Singapore Government were leaning on Indonesia.
We will never know for sure and as I said opinion is divided although the aircraft descended with maximum power on!! Nobody seems to able to explain that.