Editing Lockheed L-1011 TriStar (section)

=== Fuel system ===
The L-1011-1 has four wing tanks; each inboard tank feeds the respective wing engine, and the two outboard tanks feed the tail engine via a flow equalizer.<ref name=":0" />{{Rp|33}} The additional center tank of the long-range variants, which is two halves, is located between the wing halves. Each center tank half acts as additional capacity to its adjacent inboard wing tank; filling it by way of [[Injector|ejector pumps]]. When the center tank is filled, it is used to [[Aircraft fuel system#Multi-engine aircraft fuel system|crossfeed]] all three engines in flight (by way of the ejector pumps and crossfeed valves) until the center tank is empty and the remaining tanks are equalized.<ref>{{Cite book|url=https://apps.dtic.mil/dtic/tr/fulltext/u2/a119572.pdf|archive-url=https://web.archive.org/web/20200321124424/https://apps.dtic.mil/dtic/tr/fulltext/u2/a119572.pdf|url-status=live|archive-date=March 21, 2020|title=Commercial Aircraft Airframe Fuel Systems Survey and Analysis|publisher=FAA Technical Center|year=1982|pages=41–44}}</ref>

[[File:TWA Lockheed L-1011 Tristar coach cabin.jpg|thumb|Coach cabin of a [[TWA]] L-1011 TriStar in 2–5–2 layout]]