Hazard avoidance, Five-hundred aural alert, Negative climb rate after takeoff alert (ncr) – Garmin G1000 Mooney M20TN User Manual

Page 339: Don’t sink

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190-00647-02 Rev. A

Garmin G1000 Pilot’s Guide for the Mooney M20M/M20R/M20TN

325

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

least 164 feet below the prescribed altitude at the Final Approach Fix. See the Flight Instruments Section for
details.

FIVE-HUNDRED AURAL ALERT

The purpose of the aural alert message “Five-hundred” is to provide an advisory alert that the aircraft is 500

feet above terrain. When the aircraft descends within 500 feet of terrain, the aural message “Five-hundred” is
generated. There are no display annunciations or pop-up alerts that accompany the aural message.

NEGATIVE CLIMB RATE AFTER TAKEOFF ALERT (NCR)

The Negative Climb Rate (NCR) After Takeoff alert (also referred to as “Altitude Loss After Takeoff”)

provides alerts when the system determines 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:

• Height above the terrain is less than 700 feet

• Distance from the departure airport is 2 nm or less

• Heading change from the departure heading is less than 110 degrees

Figure 6-71 shows the NCR alerting parameters as defined by TSO-C151b.

1000

800

600

400

200

Height Above Terrain (Feet

)

Altitude Loss (Feet)

0

20

40

60

80

100

120

140

“DON’T SINK”

“DON’T SINK”

1000

900

800

700

600

500

400

300

200

100

Height Above Terrain (Feet

)

Sink Rate (Feet Per Minute)

0

“DON’T SINK”

“DON’T SINK”

500

1000

1500

2500

3500

2000

3000

4000

Figure 6-71 Negative Climb Rate (NCR) Alert Criteria

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