Honeywell EGPWS MK VII - Mode 7 - Windshear Alerting

Mark V and Mark VII EGPWS Pilot’s Guide
060-4241-000 System Description
Rev H, August 2011 25
MODE 7
Continued
Windshear
Warning
Windshear Warning results in illumination of red Windshear
Warning lights and an aural siren followed by the message
“WINDSHEAR, WINDSHEAR, WINDSHEAR”. The
lights remain on for as long as the aircraft is exposed to
conditions in excess of the warning alert threshold. The aural
message will not repeat unless another separate windshear
event is encountered. The threshold is adjusted as a function
of available climb performance, flight path angle, airspeeds
significantly different from normal approach speeds, and
unusual fluctuations in Static Air Temperature (typically
associated with the leading edge of a microburst). The
Windshear Warning envelope is illustrated in the figure
shown on page 25.
Mode 7 Windshear alerting is active under the following
conditions:
• During takeoff; from rotation until an altitude of 1500 feet
AGL is reached,
• During approach; From an altitude of 1500 feet down to 10
feet AGL,
•
During a missed approach; until an altitude of 1500 feet
AGL is reached.