Cockpit Reference Guide

190-00763-02 Rev. A
Garmin G1000 Pilot’s Guide for the Piper PA-46 Meridian
377
HAZARD AVOIDANCE
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICES INDEX
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICES INDEX
EXCESSIVE DESCENT RATE ALERT
The purpose of the Excessive Descent Rate (EDR)alert is toprovidesuitable noticationwhenthe
aircraftisdeterminedtobeclosing(descending)uponterrainatanexcessivespeed.Figure6-93showsthe
parametersforthealertasdenedbyTSO-C151b.
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
0
1000 2000 3000 4000 5000 6000 7000 8000 9000
10000 11000 12000
Descent Rate (FPM)
Height Above Terrain (Feet)
Caution: “SINK RATE”
Warning: “PULL UP”
Figure 6-93 Excessive Descent Rate Alert Criteria
FORWARD LOOKING TERRAIN AVOIDANCE
Reduced Required Terrain Clearance (RTC) and Reduced Required Obstacle Clearance (ROC)
alertsareissuedwhentheaircraftightpathisaboveterrain,yetisprojectedtocomewithintheminimum
clearancevaluesinFigure6-94.WhenanRTCalertisissued,apotentialimpactpointisdisplayedonthe
TAWS-BPage.
Imminent Terrain Impact (ITI) and Imminent Obstacle Impact (IOI) alerts are issued when the
aircraftisbelowtheelevationofaterrainorobstaclecellintheaircraft’sprojectedpath.ITIandIOIalertsare
accompaniedbyapotentialimpactpointdisplayedontheTAWS-BPage.Thealertisannunciatedwhenthe
projectedverticalightpathiscalculatedtocomewithinminimumclearancealtitudesinFigure6-94.