https://kurier.at/chronik/oesterreic...ch/220.807.911
Google translation:
It is also unclear whether Arch would ever be allowed to start. Pilots point out that helicopter flights are allowed actually at night only from airfield to airfield, also had regular contact with the air traffic control exist.
[...]
The owner of the mountain hut stated that the 48-year-old Arch (free of charge) provided him with potatoes, because its previous supplier was apparently too expensive.
Since April Arch had permits for landings to supply the cabin. How did he get those permits however, is unclear. Normally in the National Park Hohe Tauern strict flight rules apply. Since Arch, reportedly, had no license for supply flights, he must have done this as a favour as a private person.