Garmin G1000 Piper PA-46 Meridian - Manual (Page 381)

190-00763-01 Rev. A Garmin G1000 Pilot’s Guide for the Piper PA-46 Meridian 367
HAZARD AVOIDANCE
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
PREMATURE DESCENT ALERTING
A Premature Descent Alert (PDA) is issued when the system detects that the aircraft is significantly below
the normal approach path to a runway.
PDA alerting begins when the aircraft is within 15 nm of the destination airport and ends when the aircraft
is either 0.5 nm from the runway threshold or is at an altitude of 125 feet AGL while within 1.0 nm of the
threshold.
700
600
500
400
300
200
100 Height Above Terrain (Feet
)
Distance From Destination Airport (nm)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
PDA Alerting Area PDA Alerting Area
Runway
Threshold
Figure 6-83 PDA Alerting Threshold
FIVE-HUNDRED AURAL ALERT
The purpose of the aural alert message “Five-hundred” is to provide an advisory alert to the pilot 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
The figure below shows the NCR alerting parameters as defined by TSO-C151b.