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indicated by the PFPM below the flight path marker and acceleration by
the PFPM above the flight path marker.
SYMBOL I FUNCTION
Figure 2-92. HUD TLN Basic Format (Sheet 4 of 4)
The symbols removed by the DECLUTTER switch
vary with formats and are discussed in the applicable
paragraphs.R efer to Figure 2-93 for declutter information
in TLN-GD, TLN-GU, A/A, and A/G modes.
2.33.8.3.1 Takeoff/Landing/Navigation Formats.
TLN formats are categorized by the selected
steering mode and landing gear position. TLN basic, the
HUD default format, does not display steering information.
Refer to Figure 2-92 for the location and description
of TLN basic symbology.
Steering mode selection is made through MFD pushbutton
or cursor designate action on the VDI AWL formats.
TCN and DEST steering mode selections are also
available on the HSD by boxing the tacan data buffer or
waypoint data butter, respectively. Making a steering
mode selection changes TLN basic to TLN TCN (tacan),
MAN (manual), DEST (destination), D/L (data link), or
AWL (all-weather landing). Steering mode is identified
on the HUD by a legend in the data readout display area.
Steering modes are described in Chapter 20.
ORIGINAL 2-170
NAVAIR Ol-Fl4AAD-1
HUD MODES I
RADAR ALTITUDE READOUT
TARGET POINTER/AON
cl Not Present
Present
As Required
I * Pitch ladder replaced on Spin
Figure 2-93. HUD Declutter Levels
ORIGINAL
NAVAIR 01.FI4AAD1
1. TCN selection adds a course-steeringa rrow and
course-deviationd ots. Distancet o the tacans tation
is displayed to the right of the TCN legend.
2. MAN steering selection adds a commanded heading
marker to the heading scale. The commanded
heading marker also appears on destination, datalink,
and AWL formats.
3. DEST steering selection adds the waypoint destination
range to TLN basic format.
4. D/L selection displays the range to the data-link
destination. A large flashing ‘X” will appear in the
center of the display when a data-link waveoff
command is received.
5. AWL steering selection provides for the display of
ACL and ILS, ACL only, ILS only, or no ACL and
ILS glidepath situationdisplays. The display ofthe
HUD flight director glideslope and centerline
steering can also be independently controlled. Selections
are made via MFD pushbutton activation
on the VDI AWL format. A large, flashing “X”
will appear in the center of the display when a
waveoff command is received. Distance to the
tacan station is displayed as is the TCN legend.
When the landing gear handle is placed in the down
position, the HUD cage/uncagef unction is enabledo n
the CAGE/SEAM switch located on the inboard throttle,
the system transitions to TLN-GD mode, and all weapon
selections are cleared. In TLN-GD mode, the Mach
number is removed and aircraft g is displayed if the g’s
fall below +0.5 or exceed +1.5; peak g is displayed in
normal declutter mode if aircraft g falls below 0.0 or
exceeds +2.0; the horizon line is extended across the
HUD field of view and a flying “W” (waterline) symbol
is added at the fuselage reference line.
Note
The waterline symbol is also added in other
HUD formats when the flightpath marker is
at or beyond the HUD field of view or when
altitude data is lost.
Figure 2-94 shows the symbols that are added during
tacan and AWL flight director steering modes, landing
gear down, with digital or analog display selection. Refer
to Figure 2-95 for a description of the symbols that
are available for TLN formats.
2.33.8.3.2 Air-to-Air Formats. A/A formats (Figures
2-96 and 2-97) are presentedw hen the pilot selects
the A/A pushbutton on the pilot DISPLAYS control
panel, when a weapon is selected, the radar hot modes
are selected, or when the ACM guard is lifted. The A/A
formats provide target acquisition, weapon status, and
shoot prompts as well as primary flight information.
Target data and the selection legends A/A, PH, SP, SW,
and G are displayed. Quantity of the selected weapons
is also shown. When GUN is selected, the quantity
number indicatesr oundsr emaining in hundreds.A large
“X” through a weapon selection legend indicates that
the master arm switch is SAFE.
Refer to NAVAIR Ol-F14AAD-IA for a description
of air-to-air attack.
2.33.8.3.3 Sensor Mode Indications. Radar modes
are indicated on the HUD via alphanumerics. The radar
mode alphanumerics are removed when the radar is off
or in the computer mode. An “X” overlays the mode
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F-14D 飞行手册 Flight Manual 1(147)
