Well, I got my info mainy from ORF.at. There they state:
- he operated an airtransport company specialized in supply/support of alpine huts
- he flew himself (I'd guess he was PIC)
- he left around 21:15 lct for LOWS where his ac was stationed (my guess "his R66 was stationed". I doubt they were talking about his Edge540 acro plane)
Registration OE-XHA
https://aviation-safety.net/wikibase/wiki.php?id=189924
He was the operator of the OE-XHA according to
https://www.austrocontrol.at/jart/pr...2015_06_DE.pdf
Accoring to
Rotorsky Helicopter Service Christian GruberHubschrauber Flugschule (FTO website) he was holding a CPL.
Flight was NVFR weather was fine.