TM 1-1520-238-10
Change 3
4-3
1
2
3
4
5
6
7
9
10
11
12
13
14
HI
LO
100
98%
116
15
16
17
18
19
20
21
22
23
24
25
26
M01-128
W
30
33
N
3
6
E
8
Figure 4-1.
Flight Symbology Modes
Table 4-1.
Flight Symbology Definitions
Fig. 4-1
Ref No.
Symbol Name
Description
1
LOS Reticle
Represents the line-of-sight of the crew member selected sight. The reticle
will flash whenever the selected sight LOS is invalid or has failed. The reticle
will also flash whenever the ‘‘ACTIONED’’ weapon is in a NO-GO state. The
High Action Display will prompt the crewmember for the appropriate
condition.
2
Alternate Sensor
Bearing
Indicates to the crewmember the other crewmember sensor relative bearing
with respect to helicopter center line.
3
Lubber Line
Index indicates helicopter magnetic heading.
4
Cueing Dots
Indicates cued direction for target acquisition. All four dots present and
flashing indicate IHADSS boresight is required.
5
Command Heading
Indicates heading to fly to next navigation waypoint designated by the
doppler navigation system if bob-up mode of the flight symbology is not
selected. Indicates fixed heading reference when bob-up mode is selected.
