For the BoS quest "Show no Mercy" I'm supposed to get on a vertibird on the prydwen's flight deck, but the only vertibird on the prydwen takes me to the airport. The quest marker is floating over the middle of a small lake right next to the airport, with a brotherhood lancer-initiate swimming right under it. So now I can't continue the BoS quest line at all.

[Solved]

Just walked to the island I was supposed to take the vertibird to, fixed it.

this bugged for me aswell. in quite a few ways.

after multiple attempts i finally got the quest done though.

heres how it bugged out for me.

- vertibird blew up attacking behemoth and a few other super mutants. 1 legendary. i died during the explosion. had to reload

- vertirbird didnt appear at all. had to reload

- vertibird was at the airport. as soon as i walked towards it, it took off and docked with the prydwen

i went back to the prydwen and i couldnt select the vertibird. had to reload

- vertibird was at prydwen. i got onboard. vertibird destroyed as soon as the pilot said he was going to find a landing spot after i killed the behemoth.

got chucked away from the explosion.

had to walk back towards fort strong.

no mission markers appeared anymore for enemies or objectives.

paladin danse disappeared.

killed everything in fort strong armory etc.

then danse appeared. said something about reporting back to maxston and the disppeared again.

buggy quest

I got a bug like that too, but for me it wouldn't let me go in it.

I just had this happen to me. Fortunately, I quicksaved just prior and on reloading a couple of times it worked. *whew!*