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Table 4-17: Approach Modes FCS Vertical Modes................................. 4-67
Table 4-18: Approach Modes Navigation Sources .................................. 4-70
Table 4-19: Approach Modes Flight Path Symbol Group ....................... 4-78
Table 4-20: Approach Modes Rollout Symbol Group............................. 4-88
Table 4-21: Non-Normal Symbology ...................................................... 4-92
Table 4-22: Source Messages Symbology Group.................................... 4-98
Table 4-23: Warning Messages Symbology Group............................... 4-100
Table 4-24: Sensor Failure Flags ........................................................... 4-108
Table 4-25: Sensor Miscompares........................................................... 4-110
Table 4-26: HGS Modes/Symbology Matrix (page 1 of 7) ................... 4-116
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
x November 2002 9701-1153 Rev A
Blank Page
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 1-1
Section 1:
Introduction
This Pilot Guide presents data related to Flight Dynamics’ Head-Up
Guidance System (HGS®) installed in the Bombardier Model CL600-2C10
(CRJ 700) aircraft. This guide describes the HGS and modes of operation,
explains the symbology, and demonstrates HGS use in a typical flight
profile.
The HGS is an electronic and optical system that displays information in the
left-side pilot’s forward field of view. The HGS focuses the display at
optical infinity and presents flight and navigational data conformal to the
real world. The system is certified for all phases of flight and has met the
requirements for low-visibility takeoff and manual Category III approach,
landing, and rollout.
The HGS optimizes symbology for full-flight regime use and includes the
application of inertial flight path and flight path acceleration. HGS guidance
is used for CAT I, II and III operations, low-visibility takeoff, and rollout (if
enabled). FCS (Flight Control System) flight guidance is used for the PRI
and F/D modes. HGS systems integration and unique symbology allow for
extremely precise aircraft control while enhancing situational awareness and
energy management.
NOTE: Conduct HGS operations in accordance with the Airplane
Flight Manual (AFM) HGS supplement. If a conflict exists
between the AFM and this Pilot Guide, use the AFM.
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
1-2 November 2002 9701-1153 Rev A
Blank Page
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 2-1
Section 2:
HGS Description
Overview
The Model 4200 HGS is a high-integrity, wide field of view head-up
display (HUD) system designed for full-flight operations that include lowvisibility
takeoffs, landings, and rollout in the Bombardier CRJ-700 aircraft.
The HGS consists of four line-replaceable units (LRUs) (Figure 2-1):
Figure 2-1:
HGS LRUs
Combiner Overhead Unit
HGS Control Panel HGS Computer
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
2-2 November 2002 9701-1153 Rev A
The HGS uses aircraft sensors and systems to get the data and power for its
operations. These data and power systems are identified in Appendix A.
The sections that follow give data about the location, purpose, and
functionality of each of the four HGS LRUs:
• HGS Combiner
• HGS Control Panel (HCP)
• HGS Computer (HC)
• HGS Overhead Unit (OHU).
HGS Combiner
The Combiner assembly has mechanical components to hold and support
the Combiner glass in three different positions. Electrical components also
monitor the position of the glass and control the intensity of the display.
These subsections give more data about the HGS Combiner:
• Combiner Location
• Combiner Function
• Combiner Display Brightness
• Combiner Positions
• Combiner Alignment Detector.
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 2-3
Combiner Location
The Combiner is attached to the left-forward windscreen upper sill beam
structure (Figure 2-2) between the left-side pilot and the forward
windscreen. This position allows a normally-seated left-side pilot to see the
HGS symbology projected by the OHU onto the Combiner glass.
Figure 2-2:
HGS Combiner Location
Combiner Function
The Combiner reflects the CRT color while it lets all other colors pass
through the glass. The Combiner optically combines flight symbology (of
the reflected color) with the left-side pilot’s view through the windscreen.
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