TimT From United States of America, joined Jun 2001, 168 posts, RR: 0
Reply 1, posted (13 years 2 months 3 weeks 5 days 9 hours ago) and read 1017 times:
Really simple system. In the wing tank plumbing there is an additional valve with a discharge tube on the trailing edge of the wing. Tank fuel pumps on, valve open and fuel (hopefully) runs out. DC-10, the discharge tubes are just outboard of the flaps and inboard of the ailerons. (Outboard ailerons).