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For an increasing performance windshear, guidance will be given to maintain a slightly positive flight path angle (1.5 degrees) until airspeed (CAS) reaches 20 knots above the CAS recorded when the windshear mode was set. Guidance is then provided to climb the airplane at that speed.
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
Windshear Escape Guidance (Cont’d)
For a decreasing performance windshear, guidance will be provided to maintain a slightly positive flight path angle (1.5 degrees) until the AOA increases to within 2 degrees of stick shaker firing angle. The airplane will then be allowed to descend maintaining this margin to shaker. Between 400 and 10 feet (RAD ALT) margin to stick shaker will be reduced linearly to provide guidance at stick shaker AOA.
Terrain Awareness Alerting
The terrain alerting function computes minimum terrain clearance envelopes for areas along the flightpath of the airplane. The function uses airspeed and flightpath angle data in conjunction with a database containing worldwide topographical relief information in grid format. The database does not account for man-made obstructions except for all known man-made obstacles in Canada and the United States.
The terrain display is available by pressing “TERR”button on the MFD control panel. Terrain within 2000 feet of the airplane altitude is displayed. Terrain will automatically pop up, in MAP mode, on the MFD at a 10NM range, if there is a terrain threat caution at 60 seconds from impact.
TERR Button
Selecting TERR button enables terrain displays, (MAP mode only). Automatically deselects WX
radar (if selected). Selecting TERR button again
will re-enable WX radar (if previously selected).
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005
Terrain Awareness Alerting (Cont’d)
When a terrain threat is detected, a “CAUTION TERRAIN, CAUTION TERRAIN”aural is generated and GND PROX is annunciated on the PFD. When an obstacle threat is detected, a “CAUTION OBSTACLE, CAUTION OBSTACLE” aural is generated and GND PROX is annunciated on the PFD. When alerts are activated, areas which meet the terrain threat alert criteria are depicted yellow.
CAUTION TERRAIN
CAUTION TERRAIN
GF1710_083
CAUTION
OBSTACLE,
CAUTION
OBSTACLE
NOTE
If in PLAN mode and auto pop.up occurs, MFD format will automatically change to MAP mode, with the terrain map displayed.
CAUTION
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
Terrain Awareness Alerting (Cont’d)
When a collision with terrain is predicted, an aural “TERRAIN, TERRAIN, PULL UP, PULL UP” warning is generated and PULL UP is annunciated on the PFD. When a collision with an obstacle is predicted, an aural “OBSTACLE, OBSTACLE, PULL UP, PULL UP”warning is generated and PULL UP is annunciated on the PFD. When warnings are activated, areas which meet the terrain collision alert criteria are depicted red. Terrain will automatically pop up, in MAP mode, on MFD at a 10NM range, if there is a terrain warning at 30 seconds from impact.
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