MD-11 Flight Crew Operations Manual
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FMS Chapter FMS
Description and Operation Section 10
FMS.10.1
FMS.10 FMS-Description and Operation
General
The FMS is used by pilots for flight planning, navigation, performance
management, aircraft guidance, and flight progress monitoring.
The FMS consists of Flight Management Computer (FMC) 1 and 2 and two
MCDUs installed in left and right sides of the forward pedestal.
The pilot uses the Flight Control Panel (FCP) to select flight modes and the
Multifunction Control Display Unit (MCDU) to enter flight plans and other flight
data. Flight progress is monitored through the MCDU and the EIS.
After data entry, the FMCs generate a flight profile from the origin to the
destination airport. The FMCs then guide the aircraft along that profile by
providing roll, pitch, speed, and thrust commands to the FCCs.
CAUTION: All data entered into the FMS is advisory only and must
be confirmed to be accurate and current by comparison to
published and approved flight navigation charts and approach
plates.
The flight crew is responsible for assuring accuracy of the strung
FMS flight plan. All entries and edits to the FMS flight plan must
be confirmed to be in compliance with ATC clearances, both
laterally and vertically. If FMS NAV or FMS PROF guidance
does not appear to be complying with the desired flight profile, the
crew must intervene and assure that the aircraft flight profile
conforms to clearance requirements.
Flight Phases
Page FMS.20.1 shows a typical FMS profile from the preflight phase at the origin
airport to the rollout phase at the destination airport. In addition to the vertical
profile (PROF) and speed mode (SPD), the FMS will supply lateral navigation
(NAV) guidance to follow waypoints along the predefined route.
The predefined route may be divided into a number of FMS flight phases that
include PREFLIGHT, TAKEOFF, CLIMB, CRUISE, DESCENT, and
APPROACH.
For the PREFLIGHT phase, the FMC is initialized and the flight plan either
recalled from the navigation database by company route designator, or strung
(entered waypoint by waypoint) from the origin to the destination airport.
In PREFLIGHT the following items are accomplished:
October 02, 2006
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