You may want to read some Austrian/local newspaper reports with more details about the crash:
https://anno.onb.ac.at/cgi-content/a...search&seite=5
https://anno.onb.ac.at/cgi-content/a...search&seite=7
You can find more by using the
https://anno.onb.ac.at/ website (Austrian newspaper archives)
Regards,
Leendert