LIMITATIONS
AIRPLANE
OPERATIONS
MANUAL
1-01-56
Page
2
Code
07
REVISION 29
− The airplanes may not be operated within the following North and
South magnetic polar cut-out regions:
MAGNETIC
CUT-OUT
REGIONS
LATITUDE LONGITUDE
North
Between 70°N and
82°N
Between 80°W and
135°W
North of 82°N Between 0° and
180°W/E
South
Between 60°S and
82°S
Between 118°30’E and
160°E
South of 82°S Between 0° and
180°W/E
NOTE: Within the magnetic polar cut-out regions AHRS heading
data is not available.
INERTIAL REFERENCE SYSTEM
− Maximum latitude for alignment......78°15’ Northern and Southern
− IRS alignment will complete only after a valid airplane present
position (latitude and longitude) is received from the FMS.
− Time to Alignment:
0
5
10
15
20
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
ALIGNMENT TIME - minutes.....
ALIGNMENT LATITUDE - degrees Northern and Southern
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