Cirrus SR2x

HAZARD AVOIDANCE
SYSTEM
OVERVIEW
800
700
Required Terrain Clearance
RTC Level (FT)
RTC Descending (FT)
FLIGHT
INSTRUMENTS
EIS
Required Required Terrain Clearance (FT) (FT)
600
500
400
300
200
100
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
0
0 5 10 15 20 25 30
(NM)
Distance From Runway (NM)
Figure 6-158 FLTA Alert Minimum Terrain and Obstacle Clearance Values
FLTA alerts are automatically inhibited when the aircraft is less than 200 feet above the destination runway
elevation while within 0.5 nm of the approach runway or the aircraft is between runway ends.
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 (Figure 6-159).
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.
800
AFCS
700
ADDITIONAL
FEATURES
APPENDICES
Height Above Destination (Feet)
600
500
400
300
200
100
0
0
1
2
3
4
PDA ALERTING AREA
5
6
7
8
9
10
11
12
Distance to Destination (NM)
13
14
15
INDEX
Figure 6-159 PDA Alerting Threshold
The pilot can manually inhibit PDA and FLTA visual annunciations and voice alerts. Discretion should
be used when inhibiting TAWS-B alerts, and the system should be enabled when appropriate. When the
440
Pilot’s Guide for the Cirrus SR2x with Cirrus Perspective by Garmin
190-00820-11 Rev. A