MD-11 Flight Crew Operations Manual
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Hydraulics -
Controls and Displays
Hyd.30.6
5. System Reservoir (3) - grey/white/cyan/amber
Hydraulic fluid quantity is shown as a grey shaded area, proportional to
reservoir quantity. Quantity in gallons is displayed in white digits below each
reservoir.
During minimum idle speed each tank is marked with a cyan line to represent
the preflight quantity. This line is used as a reference to monitor for fluid
leakage.
If the quantity drops below 2.5 gallons, the shaded area, the reservoir outline,
and the quantity digits are displayed in amber. The digits are boxed.
If no valid quantity data is available, the digital quantity display and grey
shading are removed, and the digital quantity is replaced by an amber "X".
6. HYDRAULIC PRESSURE TEST Display
This text appears during the hydraulic pressure test.
7. Engine and Auxiliary Pumps - white/green/amber
Engine pumps are shown as white circles when the pump is off or armed
(containing the letter "A" when armed). When commanded on, the pumps are
green circles with vanes.
Low pump pressure is shown as an amber pump symbol with the letter "P"
displayed next to it.
High case drain temperature is shown as an amber pump symbol with the
letter "T" above it.
Auxiliary pumps are shown as white circles when commanded off, and green
circles with vanes when the pump is on.
November 10, 2008
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