Honeywell MK VI - Manual (Page 298)

Honeywell
MK VI MK VIII EGPWS Installation Design Guide
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6.6.4 GND Landing Flap Discrete
Type: Supplied by Flap or Flap selector handle switch.
Signal Status: Landing Flaps or Not Landing Flaps
Fault monitoring: Indication of landing flaps selected for more than 60 seconds at airspeeds above 250 (180 for GA Slow)
knots will result in a flap switch fault which will cause a GPW INOP indication.
Note: This can be caused by either a flap switch fault or by the Flap Override switch being left in the on position.
Level 6 Audio readout
GND Landing Flaps Discrete
or Flap Override Landing Flaps =>
Not Landing Flaps =>
“Landing Flaps”
“Not Landing Flaps”
6.6.5 +28V Landing Flap Discrete
Type: Supplied by Flap or Flap selector handle switch.
Signal Status: Landing Flaps or Not Landing Flaps
Fault monitoring: Indication of landing flaps selected for more than 60 seconds at airspeeds above 250 (180 for GA Slow)
knots will result in a flap switch fault which will cause a GPW INOP indication.
Note: This can be caused by either a flap switch fault or by the Flap Override switch being left in the on position.
Level 6 Audio readout
+28 V Landing Flaps Discrete
or Flap Override Landing Flaps =>
Not Landing Flaps =>
“Landing Flaps”
“Not Landing Flaps”
6.6.6 Momentary Flap Override Discrete
Type: Supplied by a momentarily actuated cockpit switch.
Signal Status: Flap Override activated if not active or Flap Override canceled if currently active.
Fault Monitoring: Activation of this input continuously for more than 15 seconds will result in the ‘Momentary Flap
Override Invalid” fault which will cause a GPW INOP indication.
Level 6 Audio readout
Momentary Flap Override Flap Override Selected =>
Flap Override Not Selected =>
“Flap Override”
“Not Flap Override”
6.6.7 Self-Test Discrete
Type: Supplied by a momentarily actuated cockpit self-test switch.
Signal Status: Self Test or Normal
Fault Monitoring: Activation of this input continuously for more than 60 seconds will result in the ‘Self Test Invalid”
fault which will cause a GPW INOP indication.
Note: This input is used to start and stop the Level 6 self test, there is no audio output for this discrete in Level 6.
6.6.8 GND ILS Tuned Discrete #1
Type: Supplied by ILS/VOR Mode Selector.
Signal Status: ILS tuned or VOR tuned
Level 6 Audio readout
GND ILS Tuned Discrete #1
ILS Tuned =>
ILS Not Tuned =>
“ILS 1 Tuned”
“ILS 1 Not Tuned”