Mark V and Mark VII EGPWS Pilot’s Guide
System Description 060-4241-000
44 Rev H, August 2011
Continued
• Altimeter Monitor – issues annunciations if the altimeter
setting is improper.
• Long Landing Monitor –
issues annunciations if the
aircraft does not touchdown within an operator defined
distance from the runway threshold.
• Low Airspeed Monitor – (basic function
for Boeing
737NG aircraft only) issues annunciations when airspeed
decreases below 70% of the amber band on the PFD Speed
tape.
Additional input discretes are used to control
EGPWS operations:
• EGPWS Self-Test – Cockpit switch initiates EGPWS Self-
Test on the ground. Typically part of EGPWS warning
(red) lamp.
• Glideslope Cancel – Cockpit switch cancels Mode 5
Glideslope alerting. Typically part of EGPWS caution
(amber) lamp.
• Glideslope Inhibit – Inhibits Mode 5 Glideslope alerting.
Normally used for backcourse approaches.
• Altitude Callout Enable – Enables Mode 6 Callouts.
• Mode 6 Low Volume –
Reduces Mode 6 volume (an
additional) 6 dB. This is typically hardwired or connected
to an external switch.
• TAD and TCF Inhibit – Cockpit switch to disable all
TAD and TCF functions. (FAA requirement)
• Audio Inhibit – disables all EGPWS audio outputs.
• Steep Approach Enable – Enables Steep Approach (Mode
1 Excessive Descent Rate) alerts biasing.
• Steep Approach Select –
Selects (activates) Steep
Approach (Mode 1 Excessive Descent Rate) alerts biasing
to reduce nuisance alerts.
• Flap Over-Ride – Cockpit switch to select landing flaps
when not in the landing flap configuration.
• Gear Over-Ride – Cockpit switch to select gear down
when not in the gear down configuration.
• PLI Select/Deselect – Used for displaying or deselecting
the display of EGPWS derived Pitch Limit Indicator (PLI)
signals when a Windshear warning occurs.
• RAAS/MON Inhibit/Enable – Inhibits or Enables RAAS
and/or Stabilized Approach, Takeoff Flap Configuration,
and Long Landing monitor functions.
For additional options information contact Honeywell.
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