Hazard avoidance, Five-hundred aural alert, Negative climb rate after takeoff alert (ncr) – Garmin G1000 Mooney M20TN User Manual
Page 339: Don’t sink
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