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NOTE
These supplementary procedures are only applicable to airplanes
5500 and subsequent, and airplanes incorporating Canadair Service
Bulletin SB 604–34–031.
1. INTRODUCTION
These supplementary procedures must be used when operating the airplane in Polar Regions.
These data complement or supersede data contained in the basic Operating Manual. These
supplementary procedures must therefore be used in conjunction with the basic Operating
Manual.
The effect of these supplementary procedures on the basic Operating Manual is given below.
2. GENERAL
The general information in Chapter 1 is applicable.
3. LIMITATIONS
The limitations in Chapter 2 are applicable, except as modified by the following:
A. Navigation Procedures
Navigation procedures identified below are NOT supported by the FMS 6000 in Polar
Regions:
• Search and Rescue Patterns (SAR)
• Holding Patterns
• Terminal Functions (such as approaches and procedure turns)
• Radial and Abeam Based Fixes
• Place–Bearing/Distance
• Place–Bearing/Place–Bearing
• Along Track Waypoints with Reference Fix.
NOTE
Attempting to insert these procedures will result in a “N/A IN POLAR
REGION” message on the CDU. For the purpose of these limitations, Polar
Region is defined as latitude greater than 89° north or south.
B. IRS Alignment
IRS alignment must be within the parameters given in the IRS Extended Alignment procedure
in this supplement, in order to proceed with a flight plan within the Polar Region.
C. Minimum Navigation Equipment
The following minimum navigation equipment is required for operations within Polar Regions:
• Dual FMS
• Dual IRS
• Dual GPS
SUPPLEMENTARY PROCEDURES
FMS Navigation in Polar Regions
Vol. 1 06−21−1
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
4. EMERGENCY PROCEDURES
The emergency procedures in Chapter 3 are applicable.
5. NORMAL PROCEDURES
The normal procedures in Chapter 4 are applicable, except as modified by the following:
A. IRS Extended Alignment
For best performance, the IRS system requires an extended alignment to be performed for
fifteen (15) minutes, between 73° and 82° (North or South).
NOTE
An extended alignment consists of allowing the system to remain in align
mode for at least fifteen minutes before entering present position.
The following lists the accuracy differences for a normal alignment below 73° N/S and an
extended (15 minutes) alignment between 73° and 82° N/S.
PARAMETER
NORMAL ACCURACY
(BELOW 73°)
EXTENDED ALIGN ACCURACY
(BETWEEN 73° AND 82°)
True Heading ±.40° ±.60°
Latitude ±2.0 Nm/Hr ±3.0 Nm/Hr
Longitude ±2.0 Nm/Hr ±3.0 Nm/Hr
Ground Speed ±8.0 knots ±12.0 knots
North Velocity ±8.0 knots ±12.0 knots
South Velocity ±8.0 knots ±12.0 knots
B. MAG/TRUE Transition
The FMS automatically transitions from MAG to TRUE when operating in the region bounded
by latitudes greater than 82.50 N, or when the latitude is greater than 73.50 N with a longitude
between 87.50 W and 122.50 W, otherwise known as the “keyhole region”. Whenever the
aircraft is operating within the keyhole region, selection of MAG is not possible. MAG must be
selected manually by the operator when the aircraft is outside of the keyhole region, before
the FMS will transition back to MAG. Transition will NOT occur automatically.
NOTE
The pilot must follow the proper operational requirements for selection of
MAG/TRUE modes. FMS automatic switching between MAG and TRUE
modes may not correspond with domestic airspace requirements.
SUPPLEMENTARY PROCEDURES
FMS Navigation in Polar Regions
Vol. 1 06−21−2
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
5. NORMAL PROCEDURES (CONT'D)
C. Polar Region
Select FMS as NAV source when entering the Polar Region.
NOTE
The EFIS compass cards on the PFDs may begin to deviate when
approaching and transitioning the Pole and an amber ’EFIS COMP MON’
and amber boxed HDG may be posted on both PFD’s.
The divergence and convergence of the HDG numbers displayed results
from each display using its onside IRS sensor as its heading source. The
split in IRS positions does not adversely affect FMS steering, flight directors,
or cross track deviation as displayed on the HSI.
The compass information will normalize after transitioning the pole, and no
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