Ripley: How Long?
Bishop: This conduit runs almost to the uplink assembly, 180 meters. Say 40 minutes to crawl down there.
Ripley: Right.
Bishop: An hour to patch in and align the antenna, 30 minutes to prep the ship, and about 50 minutes flight time.
Ripley: It's gonna be close. Good luck.
Bishop: See you soon. Watch your fingers.
Vasquez: Vaya con dios, man

-- Aliens