Honeywell MK XXII, MK VIII manual Magnetic Heading Validity Discrete, Aoa Vane Heater Discrete

EGPWS LINE MAINTENANCE MANUAL

3.8.33 MAGNETIC HEADING VALIDITY DISCRETE

A Magnetic Heading validity discrete may be used by EGPWS for the Magnetic Heading sensor.

Type:	Validity from Magnetic Heading sensor.
Signal Status: Valid or Invalid
		Level 6 Audio readout
Magnetic Heading Validity Discrete		Valid =>	“Magnetic Heading Valid”
		Invalid =>	“Magnetic Heading Invalid”

3.8.34 AOA VANE HEATER DISCRETE

An AOA Vane Heater Discrete may be used by EGPWS for indication of vane heat for flight history recording.

Type:	Heater Flag from AOA vane.
Signal Status: Vane Heater On or Vane Heater off
		Level 6 Audio readout
AOA Vane Heater Discrete		True =>	“AOA Vane Heater On”
		False =>	“AOA Vane Heater Off”

3.8.35 PLI DESELECT SWITCH DISCRETES (MK V AND MK VII ONLY)

PLI deselect switch discretes may be used by EGPWS for de-activating the PLI select relays to remove EGPWS PLI indication from the ADI.

Type:	momentary make/break switch
Signal Status:	EGPWS PLI deselected
			Level 6 Audio readout
PLI Deselect Switch #1		Pressed	=>	“PLI Deselect Switch 1 True”
		Not Pressed =>		“PLI Deselect Switch 1	False”
PLI Deselect Switch #2		Pressed	=>	“PLI Deselect Switch 2	True”
		Not Pressed =>		“PLI Deselect Switch 2	False”

3.8.36 AUTOPILOT DISCONNECT DISCRETES

Autopilot Disconnect discretes may be used by EGPWS for indication that the Autopilot has been disconnected.

Type:	Autopilot Disconnected
Signal Status: Autopilot Connected or Not Connected
		Level 6 Audio readout
Autopilot Disconnect #1		Connected	=>	“Autopilot 1 Selected”
		Not Connected =>		“Autopilot 1 Not
				Selected”
Autopilot Disconnect #2		Connected	=>	“Autopilot 2 Selected”
		Not Connected =>		“Autopilot 2 Not
				Selected”

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO.: 060-4199-180 REV: G SHEET 47 of 68