Operation Manual Part 2

Aerosoft – Digital Aviation
CRJ-70 & CRJ-900
AOM PART 2
Systems Description
VOL
5
5-1-104
26-Jul-2017
TRAFFIC ALERT AND COLLISION AVOIDANCE SYSTEM ( TCAS)
The TCAS system exchanges information regarding the aircrafts position, heading and speed to estimate
possible conflicts or collisions. Activating mode S on your transponder enables the aircraft transponders to
interrogate their positions, relative approximation and hence trigger warning messages. Surveillance range is
40 miles and can detect up to 30 aircraft simultaneously.
SYMBOL
COLOR
THREAT LEVEL
THREAT LEVEL DEFINITION
CAUSE
RED
Resolution
Advisory (RA)
Intruding Aircraft 25 seconds
from closest point of
approach
Intruding aircraft is above by
100 ft and descending at least
500 feet per minute
AMBER
Traffic Advisory
(TA)
Intruding Aircraft 40 seconds
from closest point of
approach
Intruding aircraft level with
and not climbing or
descending
CYAN
Proximate Traffic
Any traffic within
surveillance range and ±
1,200ft vertical
Traffic below 1,200 feet and
climbing at least 500 feet per
minute
CYAN
Other Traffic
Any traffic within TCAS
range limit
Traffic above 2,700 feet and
descending at least 500 feet
per minute