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ST3400 TAWS/RMI PILOT’S GUIDE
PAGE 52
GLIDESLOPE OVERRIDE softkey
[GLIDESLOPE] softkey controls GPWS Mode 5 glide slope alerts NORM
or OVERRIDE (disabled). Allows disabling glide slope alerting. Can be
used to disable the glide slope warning during VFR conditions or when
flying a back-course approach to an ILS. Note: This annunciation is
shown only as a result of selection of the GS OVRD function, not from
automatic disable from the HSI back-course output, if installed.
FLAPS OVERRIDE softkey
[FLAPS] softkey controls GPWS Mode 4 FITNL alert NORM or
OVERRIDE. OVERRIDE forces the internal flap sensor to the DOWN
state regardless of the current flap position. Use when a no-flaps landing is
desired to inhibit the flaps alerts at 200’. Setting the FLAPS setting to
OVERRIDE will also suppress GPWS Mode 3 “Don’t Sink” alerts.
TFC OVERRIDE softkey
[TFC] softkey controls availability of traffic overlay over the REL, PRED
and TOPO terrain displays. This has exactly the same function as holding
the TFC button for one second while displaying any terrain view.
TAWS INHIBIT softkey
[TAWS INH] softkey provides access to the TAWS INHIBIT function
NORM or INHIBIT. In the INHIBIT state, the TAWS alerts and PRED
and REL displays are disabled but the GPWS alerts and TOPO display
remain active. During ground operations, the PRED and REL displays are
enabled even when TAWS INHIBIT is enabled. This allows terrain above
the aircraft to be shown before takeoff. To totally disable the terrain
display, press TAWS INHIBIT then press RMI.
MANUAL BRIGHTNESS softkeys
[xxx] The brightness level of the display is controlled manually by the pilot
using the [
] and [
] buttons. The level can be set between 0 and 100.
Each time the ST3400 is powered on, the brightness level is reset back to
100 (maximum brightness).
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ST3400 TAWS/RMI PILOT’S GUIDE
PAGE 53
MSG Display
Whenever a system message exists on the MSG screen the normal
operating display will show MSG in reverse video next to the [
M
] button.
Press the [
M
] for the pilot’s menu, and then press the [
MSG
] softkey.
The Equipment Status display lists current equipment status (valid/invalid
or no data).
To exit, press [
MSG
] to return to the Pilot’s Menu or press the [
EXIT
]
softkey to return directly to normal operation.