Main tanks
The main tanks are integrated in the D-box area of the main wings
(inboard section), spanning the entire leading edge of the wing. A smaller
tank, connected to the leading edge tank, is located inboard of the
airbrake box behind the spar, as illustrated in Figure 7.8-2.
Figure 7.8-2: Main wing tanks (blue)
Figure 7.8-3: Main wing water tank filler and drain cap locations
The dump valves are situated in the lower wing skin, approximately
400 mm from the fuselage.