MD-11 Flight Crew Operations Manual
k
Aircraft General -
Description and Operation
Agen.10.2
The Auto Flight System (AFS) consists of two Flight Control Computers (FCC)
in the avionics compartment and an FCP on the glareshield. The pilot makes
inputs into the AFS with the FCP.
The Flight Management System (FMS) consists of two Flight Management
Computers (FMC) in the avionics compartment and two Multifunction Control
Display Units (MCDU) on the forward pedestal. The pilot makes inputs into the
FMS with the MCDUs.
The Inertial Reference System (IRS) consists of three Inertial Reference Units in
the avionics compartment and an IRS control panel on the forward overhead
panel. The pilot makes input into the IRS with the IRS control panel.
The Fuel System Controller (FSC) in the avionics compartment and the FUEL
control panel on the overhead panel provide automatic and manual control of the
fuel system. The Ancillary Fuel System Controller (AFSC) in the avionics
compartment provides backup operation.
The Environmental System Controller (ESC) in the avionics compartment and the
AIR control panel on the overhead panel provide automatic and manual control of
the three engine air bleeds and air conditioning packs.
The Electrical Power Control Unit (EPCU) in the avionics compartment and the
ELEC control panel on the overhead panel provide automatic and manual control
of electrical power distribution.
The Hydraulic System Controller (HSC) in the avionics compartment and the
HYD control panel on the overhead panel provide automatic and manual control
of the three separate hydraulic systems.
The Miscellaneous System Controller (MSC) in the avionics compartment
automatically controls:
• Auxiliary Power Unit (APU).
• Pitot, AOA, and TAT heat.
• Engine ignition and start.
• Cargo door test.
• Cargo fire system.
• Emergency light battery test.
The HSC, ESC, and FSC are dual channel controllers in which certain transient
faults can be cleared by switching channels. This is accomplished by selecting the
associated system to manual mode, and then back to auto. Preflight tests that are
in progress will be interrupted by this procedure and must be performed again
either automatically or manually.
October 02, 2006
To Next Page
Loading...