that someone might have died
it was flown in 2014
1912 was when the first helicopter flown
I/You/We/They have flown. He/She/It has flown.
This means that: he never thought that the bird could have left it's nest.
descended? Driven (in a car, as opposed to flown in a plane). Walked (as opposed to having flown somewhere.)
It is flown in reverse to signal distress.
Bird Has Flown was created in 1969.
The Eagle Has Flown was created in 1991.
1912 was when the first helicopter flown
Flown is the past participle of fly.
The past tense form is flew. Flown is the past participle. fly - flew - flown