Tangential Q to Prigoshin crash: Do private business trips necessarily file a list of passengers?

Factual Questions
1

With reference to the plane crash on 23 August 2023 near Tver, Russia:

Official Russian announcements apparently quickly stated that Yevgeny Prigoshin was on the passenger list, and later published a full passenger and crew list.

My question: Would it be a given that a domestic flight by a small private business jet, apparently not hired but owned by one of the passengers, must file a passenger manifest with aviation authorities?

2

Or is Russia more regulated in terms of travel?

3

It also occurs to me the caution to Putin’s ex-friends about staying away from open windows will have to be extended to - stay away from window seats.

4

It’s required for any flight entering or leaving U.S. airspace, but your specific question can probably only be answered by Russian authorities.

5

Also brings to mind that there were passenger lists discussed in the news about flights to Epstein Island which is part of the USA (US Virgin Islands). Would that be “international” per the FAA/DHS rules? Or a domestic flight.

6

Here are the US rules:

https://www.faa.gov/air_traffic/publications/us_restrictions/airspace/#:~:text=CBP%20has%20enacted%20APIS%20procedures,manifests%20of%20persons%20on%20board.