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AUTOMATIC FLIGHT CONTROL SYSTEM
Table of Contents
Flight Crew Operating Manual
CSP A--013
MASTER
CHAPTER 3 -- AUTOMATIC FLIGHT CONTROL SYSTEM
Page
TABLE OF CONTENTS 03--00
Table of Contents 03--00--1
INTRODUCTION 03--10
Introduction 03--10--1
FLIGHT CONTROL AND GUIDANCE 03--20
Flight Control and Guidance 03--20--1
Flight Director 03--20--2
Synchronization 03--20--6
Flight Mode Annunciator 03--20--8
Lateral Modes of Operation 03--20--8
Vertical Modes of Operation 03--20--12
Altitude Alert System 03--20--16
System Circuit Breakers 03--20--19
AUTOPILOT 03--30
Autopilot 03--30--1
LIST OF ILLUSTRATIONS
INTRODUCTION
Figure 03--10--1 Auto Flight Systems -- General 03--10--2
Figure 03--10--2 Automatic Flight Control System Modes 03--10--3
FLIGHT CONTROL AND GUIDANCE
Figure 03--20--1 Flight Control Panel Layout 03--20--1
Figure 03--20--2 Flight Director Controls and Indications 03--20--4
Figure 03--20--3 Course Pointer Control and Indication 03--20--5
Figure 03--20--4 Flight Director Synchronization 03--20--7
Figure 03--20--5 Flight Mode Annunciator 03--20--8
Figure 03--20--6 Altitude Alert System 03--20--17
Figure 03--20--7 Automatic Flight Control System
EICAS Indications 03--20--18
AUTOPILOT
Figure 03--30--1 Autopilot -- General 03--30--2
Figure 03--30--2 Autopilot -- Controls 03--30--4
Figure 03--30--3 Autopilot -- PFD Flags 03--30--5
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Figure 03--30--4 Autopilot -- EICAS Messages 03--30--6
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AUTOMATIC FLIGHT CONTROL SYSTEM
Introduction
Flight Crew Operating Manual
CSP A--013
MASTER
1. INTRODUCTION
The automatic flight control system (AFCS) provides integration of the autopilot and flight
director systems. The AFCS system consists of two interlinked flight control computers
(FCC 1 and FCC 2), a two axis autopilot, two yaw dampers, automatic elevator trim control
and assorted servos and actuators. The flight director commands the flight crew to follow
cues on the primary flight displays (PFD’s).
The flight control computer receives mode selections from the flight control panel and sensor
information from the air data system, navigation systems, attitude and heading reference
system, radio altimeter and surface position sensors.
The flight control computer receives mode selections from the flight control panel and sensor
information from the air data system, navigation systems, inertial reference system, radio
altimeter and surface position sensors.<0025>
The FCC’s provide flight guidance commands to the autopilot which provides the control
signals to drive the aileron and elevator servos as well as the horizontal stabilizer trim. The
flight director provides computed steering commands using a command bar on the attitude
director indicator portion of the PFD’s. The steering commands provide visual guidance for
the pilot to manually steer the aircraft as defined by the selected modes of operation.
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Introduction
Flight Crew Operating Manual MASTER
CSP A--013
Auto Flight Systems --- General
Figure 03---10---1
AUTOFLIGHT
FLIGHT DIRECTOR AUTOPILOT YAW DAMPER
AUTO TRIM
INTEGRATED
AVIONICS
PROCESSING
SYSTEM (IAPS)
AUTOMATIC
FLIGHT CONTROL
SYSTEM (AFCS)
FLIGHT CONTROL
COMPUTER
(FCC) DIAGNOSTICS
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Introduction
Flight Crew Operating Manual
CSP A--013
MASTER
Automatic Flight Control System Modes
Figure 03---10---2
ALT SEL
ALT HOLD
CRUISE MODES
ROLL PITCH
HDG
VOR
FMS
PITCH
VS
SPD
DESCENT MODES
ROLL PITCH
HDG
VOR
LOC
FMS
10 DEGREES
NOSE UP
GO--AROUND MODES
ROLL PITCH
HDG
ROLL HOLD
VS
SPD
PITCH
CLIMB MODES
ROLL PITCH
HDG
VOR
FMS
15 DEGREES
NOSE UP
TAKEOFF MODE
ROLL PITCH
WINGS
LEVEL
HDG
HOLD
GS
APPROACH MODES
ROLL PITCH
LOC
VOR
FMS
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