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-For a decreasing performance shear (downdraft/tailwind), the flight director display is removed from the display, WINDSHEAR (W) flashes for 5 seconds, then remains steady. An aural tone, “WINDSHEAR WINDSHEAR” warning is activated.
MODE 7 EXCESSIVE WINDSHEAR DETECTION
WINDSHEAR CAUTION LAMP UPDRAFT (FEET PER MIN)
CAUTION WINDSHEAR
AREA
DECREASING
INCREASING HEADWIND
HEADWIND (KTS PER SEC)
(KTS PER SEC)
WINDSHEAR WARNING
DOWNDRAFT (FEET PER MIN) AREA
RUNWAY
Volume 2 Flight Crew Operating Manual Sep 13/2004 CSP 100-6 REV 1
17-01-26
TERRAIN AWARENESS ALERTING
The terrain alerting function computes minimum terrain clearance envelopes for areas along the flight path of the airplane. The function uses airspeed and flight path angle data in conjunction with a database containing worldwide topographical relief information in grid format. The terrain display is available by pressing the TR/WX button on the DCP. Terrain within 2000 feet of the airplane altitude is displayed. Terrain automatically comes up, in MAP mode, on the MFD at a 10 nm range, if there is a terrain threat caution at 60 seconds from impact. When a terrain threat is detected, an aural “CAUTION TER-RAIN, CAUTION TERRAIN” aural is generated and an amber GND PROX is displayed on the PFD. When alerts are activated, areas which meet the terrain threat alert criteria are depicted amber.
3
1.
SOLID RED — Areas of terrain that satisfy the terrain warning alert criteria.
2.
SOLID AMBER— Areas of terrain that satisfy the terrain caution alert criteria.
3.
GREEN, AMBER, RED DOT PATTERN — Areas of terrain that are significantly close to the aircraft but do not satisfy warning alert or caution alert criteria.
Sep 13/2004 Flight Crew Operating Manual Volume 2 REV 1 CSP 100-6
17-01-27 TERRAIN AWARENESS WARNING SYSTEM (TAWS) (Cont)
TERRAIN AWARENESS ALERTING (Cont)
When a collision with a terrain is predicted, an aural Terrain PULL UP, PULL UP” warning is generated and an amber PULL UP display is annunciated on the PFD. When warnings are activated, areas which meet the terrain collision alert criteria are depicted red. Terrain automatically comes up in MAP mode on MFD at a 10 nm range, if there is a terrain warning at 30 seconds from impact.
NOTE: When landing at an airport that is not in the database, TERRAIN functions can be in-hibited by selecting the TERRAIN switch OFF. The switch is located on the TAWS WARN panel.
Volume 2 Flight Crew Operating Manual Sep 13/2004 CSP 100-6 REV 1
17-01-28
TERRAIN CLEARANCE FLOOR (TCF)
The TCF function supplements the GPWS function by providing an additional terrain clearance alert envelope around airports. The TCF criteria determine alert and warning envelopes.
TCF creates an increasing terrain clearance envelope around the intended airport runway directly related to the distance from the runway. TCF alerts are based on current airplane location, nearest runway center point position and radio altitude, along with an internal database that includes all worldwide, hard-surfaced runways greater than 3500 feet in length.
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