FMS Guide

Aerosoft – Digital Aviation
CRJ-700 CRJ-900
FMS Guide
Revision Info
VOL
6
1-1-5
23-Apr-2017
FLIGHT MANAGEMENT SYSTEM - INTRODUCTION
GENERAL DESCRIPTION / INTRODUCTION
The CRJ is powered by two Collins FMS-4200 flight management computers. The control display units (CDU)
are the interface between pilots and the FMS units itself by means of data / information display and data
entry. The FMS provides lateral guidance and vertical advisories based on the entered flight route,
performance data and data collected from several sensors.
The stored performance database is advisory only, as the FMS has no ability to control vertical or speed modes
of the autopilot. Only heading information based on the programmed route are provided to the autopilot in
LNAV mode.
This chapter in the systems manual only provides a very basic introduction to the flight management system.
More details will be introduced in the following chapters.
WHERE TO FIND THE FMS/CDU AND BASIC LAYOUT
The control display units, CDUs sit on the upper part of the pedestal. Both CDUs are identical regarding
functionality and layout.
The following picture shows the basic layout of the control display unit, CDU.
- Title line
The title line shows the page title, or mode as well as the current page number and number of total
pages, of applicable
- Label line
The label lines are aligned with the respective line select keys. They show information related to the
current page. Pressing the line select key adjacent to the label line, allows copying the indicated
information into the scratchpad or vice versa.