3.8.23 SIMULATOR REPOSITION (MK V AND MK VII ONLY)
Type: Switch for activating Simulator Reposition Signal Status: Reposition or Normal If the Simulator Reposition program pin option is activated, then this discrete can be used to ‘preset’ the EGPWS to
match simulator initial conditions.
Level 6 Audio readout
Reposition => “Simulator Reposition On”
Simulator Reposition Discrete
Normal => “Simulator Reposition Off”
3.8.24 WEATHER RADAR ON/OFF
Type: WXR On/Off switch input Signal Status: Radar turned on or off
Level 6 Audio readout
WXR #1 On Discrete On => Off => “Weather On” “Weather Off”
WXR #2 On Discrete On => Off => “Weather 2 On” “Weather 2 Off”
3.8.25 LOCALIZER VALIDITY DISCRETES (MK V AND MK VII ONLY)
Two Localizer validity discretes may be used by EGPWS, one for each possible ARINC 547 Localizer Receiver input.
Type: Validity from ARINC 547 Localizer receiver.
Signal Status: Valid or Invalid
Level 6 Audio readout
Localizer Validity Discrete #1 Valid => Invalid => “Localizer 1 Valid” “Localizer 1 Invalid”
Localizer Validity Discrete #2 Valid => Invalid => “Localizer 2 Valid” “Localizer 2 Invalid”
3.8.26 ATTITUDE VALIDITY DISCRETES
Two Attitude validity discretes may be used by EGPWS, one for each possible Attitude sensor.
Type: Validity from Attitude sensor.
Signal Status: Valid or Invalid
Level 6 Audio readout
Attitude Validity Discrete #1 Valid => Invalid => “Attitude 1 Valid” “Attitude 1 Invalid”
Attitude Validity Discrete #2 Valid => Invalid => “Attitude 2 Valid” “Attitude 2 Invalid”
3.8.27 AIRSPEED VALIDITY DISCRETE
Airspeed validity discrete may be used by EGPWS for the Airspeed sensor.
Type: Validity from Airspeed sensor.
Signal Status: Valid or Invalid
Level 6 Audio readout Valid => “Airspeed Valid”Airspeed Validity Discrete Invalid => “Airspeed Invalid”
3.8.28 BAROMETRIC ALTITUDE RATE VALIDITY DISCRETES
Two Barometric Altitude Rate validity discretes may be used by EGPWS, one for each possible barometric rate
sensor.
Type: Validity from barometric rate sensor.
Signal Status: Valid or Invalid
Level 6 Audio readout
Barometric Altitude Rate Validity Discrete #1 Valid => Invalid => “Altitude Rate1 Valid” “Altitude Rate1 Invalid”
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