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3. The SEQUFC option to initialize the UFCD for programming
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Figure 24-8. INS Programming (Sheet 1 of 4)
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Figure 24-8. INS Programming (Sheet 2 of 4)
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Figure 24-8. INS Programming (Sheet 3 of 4)
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Figure 24-8. INS Programming (Sheet 4 of 4)
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4. The INSERT option on the UFCD
5. The number of the waypoint/OAP to the left of the desired insertion point via UFCD keypad
6. The ENT option on the UFCD keypad
7. Number of the waypoint/OAP to be inserted via the UFCD keypad
8. The ENT option via the UFCD keypad
Waypoints are deleted from a sequence by selecting:
1. The waypoint data sublevel display using the DATA option, the desired sequence route number
using the SEQ # option
2. the SEQUFC option to initialize the UFCD for programming
3. The DELETE option on the UFCD
4. The number of the waypoint/OAP to be deleted via the UFCD keypad
5. The ENT option via the UFCD keypad
When a waypoint/OAP is deleted from a sequence all waypoints/OAPs to the right of the deleted
waypoint/OAP shift left one space.
24.2.8 Aircraft (A/C) Programming. Aircraft data is entered by selecting the DATA option on the
HSI top level display and the A/C option on the waypoint data sublevel display to bring up the A/C
data sublevel display. This display shows the current aircraft data: lat/long position, wind speed, wind
direction, magnetic variation, and magnetic/true heading selection. Aircraft data is entered by
selecting the UFC option to initialize the UFCD for aircraft data entry selecting the POSN option to
enter lat/long data, the WSPD option to enter wind speed data, the WDIR option to enter wind
direction, and MVAR to enter magnetic variation. Aircraft data is entered through the UFCD keypad.
See figure 24-8, sheet 3.
24.2.8.1 True/Magnetic Heading Selection. Heading indications that appear on the HUD and HSI
display can be referenced to either true north or magnetic north. The capability to select a true north
heading is useful in extreme northern operations. With true north heading selected, the HSI display,
A/A and A/G radar displays, Link 4 display, and the HUD all are referenced to true north. The true
north indication on the HUD is a T displayed below the current heading. True north indications on the
HSI display consist of TRUE displayed below the current heading readout and a T displayed below the
lubber line. The true heading indications on the HSI display also appear on the Link 4 display. No
indications of true north selection appear on the A/A or A/G radar display. Since aircraft magnetic
variation is used as the best available magnetic variation source, the heading reference should not be
changed when navigating a selected course.
With true heading selected, TACAN symbology is also referenced to true north if the TACAN
station is in the TACAN data table. If the TACAN station is not in the TACAN data table, magnetic
heading is used. There is no indication when magnetic heading is selected. When INS true heading
becomes invalid, magnetic heading is used. If MC1 fails, heading selection is not available. At power up
with
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WonW the system initializes with magnetic heading selected. The reference heading is selected by
selecting DATA on the HSI display and the A/C option to access the A/C data sublevel display.
Actuating the HDG XXX option toggles between the selection of HDG TRUE and HDG MAG.
24.2.8.2 Barometric (BARO)/Radar Low Altitude Warning Programming. The BARO/RADAR
altitude warning can be set up to a maximum of 25,000 feet for BARO and 5,000 feet for RADAR.
Setting the RADAR at a value greater than 5,000 feet results in 5,000 feet being used. Passing through
the BARO/RADAR programmed altitude from above results in the ALTITUDE voice alert. Setting
the BARO/RADAR altitude warning to 0 feet disables this function. At power up with WonW, RADAR
altitude warning initializes to 0 feet and BARO altitude warning initializes to 5,000 feet.
Set the BARO/RADAR low altitude warning function by selecting the DATA option on the HSI top
level MPCD display selecting the A/C option to bring up the A/C data sublevel display. The
BARO/RADAR altitude functions are located on the lower left corner of the display. Selecting BARO
or RADAR initializes the UFCD for altitude entry. Selecting the desired option on the UFCD and
entering the desired altitude through the UFCD keypad and pressing ENT. The entered altitude
appears on the A/C data sublevel display below BARO/ RADAR as appropriate. See figure 24-8, sheet
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NATOPS Flight Manual 飞行手册 2(100)
