Honeywell MK VIII manual Flap Position Discretes, Self-Testdiscrete, Steep Approach Discretes

EGPWS LINE MAINTENANCE MANUAL

3.8.6 FLAP POSITION DISCRETES

Up to four flap position discretes are typically supplied from the flap selector handle switch.

Type:	Supplied by Flap selector handle switch.
Signal Status:	Flap position selected.

Fault monitoring: Depending on the installation, activation of more than one, or none of these discretes for more than 30 seconds will result in a Flap Unreasonable indication.

Level 6 Audio readout

Flap Position Discrete #1	Selected =>	“Flap 1 True”
	Not Selected =>	“Flap 1 False”
Flap Position Discrete #2	Selected =>	“Flap 2 True”
	Not Selected =>	“Flap 2 False”
Flap Position Discrete #3	Selected =>	“Flap 3	True”
	Not Selected =>	“Flap 3	False”
Flap Position Discrete #4	Selected =>	“Flap 4	True”
	Not Selected =>	“Flap 4	False”

3.8.7 SELF-TEST DISCRETE

Type:	Supplied by momentary 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 GPWS 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.

3.8.8 STEEP APPROACH DISCRETES

To activate Steep Approach, both of the Steep Approach discretes must be selected. Discrete #1 should be enabled if Steep Approach is to be used, and can be permanently enabled. Discrete #2 should be selected in flight when starting a steep approach, it should not be permanently selected. On ground Self-Test is inhibited if Steep Approach is active.

3.8.8.1 STEEP APPROACH DISCRETE #1 (MK V AND MK VII ONLY)

Type:	Steep Approach Enabled
Signal Status:	Steep Approach Enabled or Disabled
		Level 6 Audio readout
Steep Approach Discrete #1		Enabled =>	“Steep Approach Enabled”
		Disabled =>	“Steep Approach Disabled”

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO.: 060-4199-180 REV: G SHEET 40 of 68