Garmin GTX 330 GPS Receiver User Manual


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41
Part Three: Section 3
TAWS Alerts
Negative Climb Rate After Takeoff Alert (NCR)
ThepurposeoftheNegativeClimbRateAfter
Takeoffalert(alsoreferredtoas“AltitudeLossAfter
Takeoff”)istoprovidesuitablealertstothepilot
when the system determines that the aircraft is losing
altitude(closinguponterrain)aftertakeoff.The
auralmessage“Don’tSink”isgivenforNCRalerts,
accompanied by an annunciation and a pop-up terrain
alert on the display.
NCR alerting is only active when departing from an
airport and when the following conditions are met:
• The height above the terrain is less than 700 feet
• The distance from the departure airport is 2 NM or
less
• The heading change from the heading at the time of
departure is less than 110 degrees
TheNCRalertingparametersasdenedbyTSO-
C151bareshownintheNegativeClimbRateAlert
Criteriaguresbelow.TheNCRalertisissuedwhen
the altitude loss and height are within the range in the
rstgure,orwhenthesinkrate(negativevertical
speed) and height are within the range in the second
figure.





(EIGHT!BOVE4ERRAIN&EET
!LTITUDE,OSS&EET
       
h$/.43).+vh$/.43).+v
Negative Climb Rate (NCR) Alert Criteria










(EIGHT!BOVE4ERRAIN&EET
3INK2ATE&EET0ER-INUTE
h$/.43).+vh$/.43).+v
      
190-00356-30 Rev F
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