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waypoint is moved down to identify the new current waypoint on the FLIGHT
PLAN page.
22. DIR WPT key Calls up NEW WAYPOINT page to enter a direct waypoint for a new destination
enroute while maintaining current flight plan in memory.
23. UPD MARK key Displays after NAV UPD is pressed. Press this key to compare system
coordinates with actual coordinates when directly over a selected waypoint. When
the error is less than 300 meters, the system will update automatically and key
will revert back to original display. If the error is greater than 300 meters.
CONFIRM and REJECT keys will replace UPD MARK and STORE POS
respectively with the amount of error displayed between the two keys. If error is
greater than 1000 meters, then 999 + will be displayed.
24. STOR POS key Activation of this key initiates the target position store and address key label
changes from STORE POS to REJECT.
25. CONFIRM key Displays after UPD MARK key is pressed replacing that key if the resulting error
between the system coordinates and actual coordinates is more than 300 meters.
If the error magnitude displayed between CONFIRM and REJECT is acceptable,
press CONFIRM and the updated information is entered and the key reverts back
to NAV UPD.
26. Detected error The error detected between the system coordinates and the actual coordinates of
the waypoint measured in meters.
27. REJECT key Displays after UPD MARK key is pressed, replacing STORE POS if the resulting
error between the system coordinates and actual coordinates is more than 300
meters. If the error magnitude displayed between CONFIRM and REJECT is not
acceptable, press the REJECT key. This will revert the key back to PP.
28. STORE key Displays after STORE POS key is pressed replacing UPD MARK. If it is desired to
place the present position of the helicopter into memory, press the STORE key.
Present position will be stored in the next available storage register as displayed
and key will revert back to NAV UPD.
29. Store register Displays after STORE POS key is pressed. It depicts the next available storage
register on the Waypoint List page. This is where the present position will be
stored if the STORE key is pressed.
30. REJECT key Displays after STORE POS key is pressed replacing STORE POS. This key is
pressed to reject position storage and to revert the key back to PP.
Figure 3-36. (CDS2) Horizontal Situation Display (HSD) Page (Sheet 3 of 3)
3-74
TM 1-1520-248-10
PULL
MAN
PULL
BKUP
BRT
C
ONT VSD MMS COMM
330
300
240
210
S
150
120
060
030
N
NAV
DATA
WPT
LIST
5IP
6IP
7CP
MAP
OSET
SCL
SEL
FK-0684-9092 1:50 9
30 KPH
4.5 ETE
L 0.0 XTK
2.3KM
DIR
WPT
NEXT
WPT
LAST
WPT
NAV
UPD
PP
2 3 4 5 6 7 8
9
10
E
1
21
20
19
18
17
16
CONFIRM
376M
REJECT
UPD
MARK
STORE
POS
REJECT
STORE
24
25
26
22
23
27
28
29
15 HORIZONTAL SITUATION DISPLAY
11
12
13
14
RMS
200PPH
1.6 HR
406075-1533-2
J0922
50T
31T
W
6IP
CONTROL/INDICATOR FUNCTION
1. Waypoint distance Displays distance to waypoint listed. This waypoint can be the next waypoint
in the flight plan by pressing NEXT WPT key, the previous waypoint in the
flight plan by pressing LAST WPT, or a direct waypoint when it is entered.
2. MMS bearing indicator Indicates line-of-sight bearing of the mast mounted sight.
3. Target waypoint Indicates any stored targets within the range of those waypoints entered as
waypoint 31 through 60.
4. Compass rose 360° scale that rotates to give helicopter heading at the top of the display.
The inside edge of the compass rose encircles the flight plan route
according to selected map scale.
5. Helicopter symbol Stationary cross at the center of the display that represents the helicopter
position relative to the flight plan route displayed.
Figure 3-37. Horizontal Situation Display (HSD) Page (Sheet 1 of 4)
3-75
TM 1-1520-248-10
(Cont)
CONTROL/INDICATOR FUNCTION
6. Flight plan route Preselected waypoints connected by straight lines that represent flight plan
displayed to scale as it is listed on the Flight Plan page. Route moves in
relation to helicopter symbol.
7. Bearing caret Indicates magnetic bearing to the next waypoint in the flight plan.
8. Navigational data Optional display called up by pressing NAV DATA key which displays (KPH
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本文链接地址：
TECHNICAL MANUAL OPERATOR’S MANUAL FOR ARMY OH-58D HELICOPT(75)
