User blog comment:Pawn of Atlas/Important Discussion for Rapture Storyline page/@comment-46.7.95.98-20140329130923/@comment-867628-20140329145418

Yeah, I can see how that would be confusing; the first time I played the game I initially thought he meant "We need to get Jack out of Rapture and onto a plane" or something; it wasn't worded very well. By the time BaS takes place, Jack is already up on the surface; you could estimate that he's been there for around 2-3 years at least, if not more. So, Fontaine would then simply need to contact the programming inside Jack's head to tell him to get on a plane and take "the package from Ma and Pa" with him (read: the instructions to crash the plane above Rapture).