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Hazard avoidance, Excessive descent rate alert – Garmin G1000 King Air C90GT User Manual

Page 368

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Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT

190-00663-01 Rev. A

354

HAZARD AVOIDANCE

SY

STEM

O

VER

VIEW

FLIGHT

INSTRUMENTS

EIS

AUDIO P

ANEL

& CNS

FLIGHT

MANA

GEMENT

HAZARD

AV

OID

ANCE

AFCS

ADDITIONAL FEA

TURES

APPENDICES

INDEX

EXCESSIVE DESCENT RATE ALERT

The purpose of the Excessive Descent Rate (EDR) alert is to provide suitable notification when the

aircraft is determined to be closing (descending) upon terrain at an excessive speed. Figure 6-79 shows the
parameters for the alert as defined by TSO-C151b.

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

5500

6000

0

10

00

20

00

30

00

40

00

50

00

60

00

70

00

80

00

90

00

10

00

0

11

00

0

12

00

0

Descent Rate (FPM)

Height

Above

Terr

ain (F

eet)

Caution:

“SINK RA

TE”

Warning: “PULL UP”

Figure 6-79 Excessive Descent Rate Alert Criteria

f

orWarD

l

ooking

t

errain

a

voiDance

Reduced Required Terrain Clearance (RTC) and Reduced Required Obstacle Clearance (ROC)

alerts are issued when the aircraft flight path is above terrain, yet is projected to come within the minimum
clearance values in Figure 6-80. 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 flight path is calculated to come within minimum clearance altitudes in Figure 6-80.

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