BOMBARDIER BD-100-1A10, Operating Manual

Page: 146 / 544

AUTOMATIC FLIGHT CONTROL SYSTEM
Volume 2 Flight Crew Operating Manual May 06/2005
04-01-02
CSP 100-6
REV 2
FLIGHT DIRECTORS (FD)
DESCRIPTION
The flight directors display flight guidance cues on the attitude indicators, thereby assisting the flight crew in maintaining
a specified flight path. The flight guidance cues are displayed in the form of flight director command bars. The crew can
choose to hand fly the aircraft with "raw data" (flight directors not displayed), hand fly the aircraft using the flight director
command bars, or couple the autopilot to the flight director.
COMPONENTS AND OPERATION
The flight director (and autopilot and yaw damper) processing is done within two flight guidance computer cards in the
integrated avionics processor system (IAPS). The left and right flight guidance computer cards are identical. During pre-
cision approach and go-around modes, each flight director provides guidance to the onside displays. In all other flight di-
rector modes, only one flight director provides guidance to both left and right flight displays.
The pilot flying can select the onside flight director using the transfer (XFR) button on the flight guidance panel.
If the active flight director fails, a red boxed FD appears on the primary flight display and a cyan FD1(2) FAIL CAS mes-
sage is displayed. Selecting the XFR switch on the FGP deselects the failed flight director and allows the functional flight
director to become active.
FLIGHT DIRECTOR COMMAND BARS
The flight directors provide visual pitch and roll control guidance by means of single cue inverted V-shaped command bars,
or cross-pointer command bars. The selection of the preferred display of command bars is made by pushing the REF button
to show page 3/3 on the PFD. The flight director command bars provide visual guidance to the pilot regardless of the au-
topilot engagement mode.
SINGLE CUE COMMAND BARS
20
10
CFO1101002_
017
SINGLE CUE
DESIRED ATTITUDE
20
10
PITCH DOWN COMMAND
PITCH UP COMMAND
ROLL LEFT AND CLIMB
COMMAND
ROLL RIGHT AND DESCEND
COMMAND
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