FS Passengers crash

[SaVas]

This "jumping" of the aircraft tends to be from one of two things:

Your contact points on the aircraft are set incorrectly, or the scenery is rendering slowly (from switching views from external to cockpit and
vice versa)

One thing that has helped me with this is go into your assignments and set a key for refresh scenery. In areas that are heavily detailed
like large airports with a lot of traffic and weather loaded, as soon as you go into your cockpit from an external view, or go from the cockpit
to an external view, hit your assigned key for Refresh Scenery and your plane shouldnt jump. But do this any time you change views from
external to internal or internal to external.