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Figure 17−10−79 PFD Message Display 17−10−85
Figure 17−10−80 MFD Message Display 17−10−86
NAVIGATION SYSTEMS
Table of Contents
Vol. 2 17−00−5
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
Page
NAVIGATION SYSTEMS
Table of Contents
Vol. 2 17−00−6
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
THIS PAGE INTENTIONALLY LEFT BLANK
GENERAL
The navigation systems calculate and display the attitude, altitude and position of the aircraft, based
on data from other aircraft systems, ground stations, and sensed environmental conditions around
the aircraft. The displayed information includes aircraft movement, distance, speed and direction of
travel about all three axes. The present position and computed future positions can also be
displayed.
This chapter will cover:
• Inertial reference system (IRS)
• Weather radar system
• Terrain awareness warning system (TAWS)
• VHF navigation system
• Distance measuring equipment (DME) system
• Automatic direction finder (ADF) system
• ATC transponder
• Traffic alert and collision avoidance system (TCAS II)
• Global positioning system (GPS)
• Flight management system (FMS)
INERTIAL REFERENCE SYSTEM (IRS)
Description
The Honeywell Laseref V micro inertial reference system (IRS) uses digital ring laser gyros to
compute attitude, heading, angular rates, linear accelerations, vertical velocity and present
position information. The IRS interfaces with the following aircraft systems:
• Electronic flight instrumentation system (EFIS);
• Weather radar;
• Automatic flight control system (AFCS);
• Flight data recorder (FDR);
• Terrain awareness warning system (TAWS);
• Traffic alert and collision avoidance system (TCAS);
• Stall protection system (SPS);
• Aircraft fuel system; and
• Flight management system (FMS).
Alignment
The IRS requires an initialization process that establishes the relationship between the aircraft
body frame and the local geographic reference. Thus, a valid input of initial latitude and longitude
is necessary in order to achieve this initialization process or alignment.
If GPS position is available, the IRSs will start aligning automatically using GPS position. No crew
action is required. If GPS is not available, initial position (LAT/LONG) must be entered manually in
the POS INIT page of the FMS CDU.
During IRS initialization on ground, the IRS ALIGNING/DO NOT TAXI message appears on the
PFDs. The aircraft should be stationary. Excessive aircraft movement may extend the time needed
to successfully align the IRS.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−1
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
INERTIAL REFERENCE SYSTEM (IRS) (CONT'D)
After successful alignment, the message on the PFD is removed, and the IRS automatically
sequences into navigation mode.
IRS Standard Alignment Time
5.0 minutes At 0.0° latitude
10.0 minutes At ±60.0° latitude
10.0 minutes At ±60.0° < latitude < ±70.24°
17.0 minutes At ±70.24° < latitude < ±78.25°
In-Flight Alignment
If a power interruption or a transient system fault occurs in-flight, and a GPS signal is valid, the
IRS system will have the capability for re-alignment. During in-flight re-alignment, the IRS
ALIGNING message appears on the PFDs.
The FMS will prompt the crew with the SET IRS HDG amber message on the FMS CDU
scratchpad (required for FMS navigation – IRS will align without this action). If the crew enters a
heading, the IRS will work as a DG until it transitions to the ATT mode, at which point it starts
calculating its own HDG.
Typically, the time required for a full alignment in navigation mode is between 10 to 20 minutes. At
the beginning of the alignment process, it is recommended that the aircraft maintain a straight and
level flight attitude (see Note 1).
NOTE
1. Aircraft maneuvers involving changes in heading increase the
alignment time.
2. The alignment time increases as a function of latitude, with the
minimum time occurring at the equator, and the maximum time
occurring at the poles.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−2
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
INERTIAL REFERENCE SYSTEM (IRS) (CONT'D)
PFD IRS Aligning Annunciations
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