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NAVIGATION SYSTEMS Description Vol. 2 17.10.21
Oct 05/06
To avoid unwanted glideslope alerts when capturing the localizer between 500 and 1,000 feet AGL, the upper limit of the alert envelope is varied in the following ways:
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Glideslope alerts are only enabled if the localizer is within ±2 dots. This allows a lateral capture of the localizer.
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The upper altitude limit for the glideslope alert is modulated with vertical speed. For normal descent rates above 500 FPM, the upper limit is set to the normal 1,000 feet AGL. For descent rates lower than 500 FPM, the upper limit is desensitized to allow a level flight capture of the localizer.
The above requirements are overridden when the aircraft descends below 500 feet AGL.
TAWS Mode 5 Figure 17.10.20
Alerts for Mode 5 display GND PROX on the PFDs, and generate an aural “GLIDESLOPE” warning. Only two “GLIDESLOPE” warnings are given while in the Mode 5 outer “soft” envelope. If the conditions worsen, two more “GLIDESLOPE” aural messages annunciate at a faster rate. This pattern continues until the inner “louder” area is penetrated (2 dots or greater deviation, below 300 feet AGL), at which time the “GLIDESLOPE” aural message will become louder and continuous.
Below 150 feet AGL, glideslope alerting is desensitized to reduce the possibility of nuisance alerts.
To permit maneuvering on final approach with an unreliable glideslope, the Mode 5 alert can be inhibited by pressing the GS switch/light on the TAWS WARNING panel. The GS switch/light can be engaged below 2,000 feet AGL, and is automatically reset before the next approach, provided the aircraft has descended below 30 feet or climbs above 2,000 feet.
NAVIGATION SYSTEMS Description Vol. 2 17.10.22
Oct 05/06
TAWS WARNING Panel Figure 17.10.21
Mode 6 – Callouts
Mode 6 provides the following advisory alerts:
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Approach minimums: One hundred feet above the RA, the “APPROACHING MINIMUMS” alert will sound. The “MINIMUMS” callout occurs as the aircraft descends through the selected minimums (RA or BARO).
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Altitude callouts: Specific callouts are program-pin selectable. Typical installation includes: 1,000, 500, 50, 40, 30, 20, 10.
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Excessive bank angle: The excessive bank angle alert is a function of the roll angle with respect to altitude above ground level. The alert envelope varies linearly from a 10° bank at 30 feet AGL, to 40° of bank at 150 feet AGL, to 55° of bank at 2,450 feet AGL. This will generate an aural “BANK ANGLE, BANK ANGLE” alert. The alert is annunciated once, and will repeat if the bank angle increases by 20%. The alert will be annunciated continuously if the bank angle is increased to 55°. The alert will be annunciated until the bank angle is decreased below threshold value.
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本文链接地址：庞巴迪挑战者605公务机机组操作手册 CL605-CHAPTER 17 -导航系统 NAVIGATION SYSTEMS(14)
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