I know what you mean about the phrase, though. Not every qualifying phrase but many qualifying phrases just act as parsers to give the speaker right of denial or opportunity to deceive. Makes me think of Bill Clinton.
On this topic it makes me nervous not because it is a lie but because it is something you would prefer to be all or nothing. You might die but you won’t necessarily die.....sort of statement. Most people who have flown have experienced turbulence.
In this case it looks not like the flight was “turbulenced” out of the sky but they actually tried to land.