Aircraft sample scenes - Standard Assets

I’m working on a game in which the main “character” is an aircraft, so I thought it would be useful to check the aircraft standard assets and imported them. The AircraftGuidelines file mentions “the Aircraft sample scenes”, but I couldn’t find them anywhere. Is there some place where I have to download them? Where can I find these sample scenes?

U gotta download whole std assets from unity itself and import it from asset store window not the usual assets>import …