The conclusion of Airship Down brings an end to The Brotherhood of Steel. Father, now at his deathbed, is fortunate enough to witness this triumph at the hands of his own parent. Now that you are positioned to carry on Father's legacy, it's time to say goodbye. Visit Father in his living quarters.
Carry on this heartfelt conversation however you'd like. Finishing this chat will complete the quest.
Enjoy a cutscene that effectively concludes your character's main journey. The world will still be open to you for free roaming, and you're welcome to pursue any outstanding Institute quests as well.