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ST3400 TAWS/RMI PILOT’S GUIDE
PAGE 54
INVALID/FAILED EQUIPMENT LIST
Input
Description
ADC1
Air Data Computer or OAT probe input
ADC2
Air Data Computer or OAT probe input
ADF1
Automatic Direction Finder Receiver
ADF2
Automatic Direction Finder Receiver
AP
Autopilot engaged input inop (ARINC 429 only)
TAWS INH
Taws Inhibit input inop (ARINC 429 only)
FLPS
Flaps input inop (ARINC 429 only)
FMS1
GPS/Flight Management System input
FMS2
GPS/Flight Management System input
GEAR
Landing Gear inop (ARINC 429 only)
GS1
Glide slope Receiver
GS2
Glide slope Receiver
HDG1
Heading System, AHRS or Directional Gyro
HDG2
Heading System, AHRS or Directional Gyro
NAV1
NAV Receiver: Composite input that contains VOR and
localizer signals
NAV2
NAV Receiver: Composite input that contains VOR and
localizer signals
RA1 Radio
Altimeter
TEST
External Self Test (ARINC 429 only)
WPR
Windshield Wiper
Note: This is an external input that raises the ST3400 audio level
.
82002-PG-F
ST3400 TAWS/RMI PILOT’S GUIDE
PAGE 55
On Screen Annunciation
When an input is either not available (no information is being received),
invalid (information is being received but data is not valid), or any other
failure condition, a message will be displayed.
Below is an illustration of the REL display with the following
annunciations:
GS OVRD:
Glide Slope Override active. No glide slope alerts will
occur.
FLPS OVRD:
Flaps Override active. The system treats the flaps as if
they are in the landing configuration (down) regardless
of their true position.
TFC OVRD:
Traffic Override active. Traffic symbols will not be
shown on the REL, PRED, and TOPO displays.
TAWS INH:
Taws Inhibit active. All FLTA and PDA alerts are
completely suppressed. GPWS alerts are still active.
PRED and REL displays are disabled except during
ground operations. A yellow ‘X’ is shown instead of
terrain information
GPWS FAIL:
One or more GPWS modes are unavailable due to failed
equipment, typically radar altimeter failure. The failed
equipment will show on the MSG screen
MSG:
A message is waiting on the MSG screen.