Thanks for surfacing the report.
It reads:
The serious incident is attributable to the fact that the crew of a commercial aircraft initiated a climb without clearance, which lead to a dangerous convergence with another commercial aircraft. The following factors were identified as the cause of the serious incident:
- The crew initiated the climb on the basis of a clearance which had been issued to another commercial aircraft belonging to the same aviation operator.
- The air traffic controller did not realise that the clearance issued was not read back by the crew for which it had been intended.
The following was identified as a contributing factor to the serious incident:
- A request by a flight crew for clearance to a higher flight level without specification of their radio callsign;
- The issue of altitude clearance by air traffic control without verification of the crew which had made the request;
- Absent reaction of another crew to whom the clearance was addressed to;
- Insufficient attention was given to the prevailing weather conditions when the decision to combine sectors was made.
Not good but criminal offense ? I'll try to dig up the actual judgment (not all are published).