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118.02
MEMORY−4
ATC ID
RANGE:
NB
NORMAL
1 ATC ALT ADF
LV
6
ADF1
TCAS DSPY 1 HF1
COM1 NAV1
121.82 108.30
1200 1799.5
15423
15600
DME IUL
109.30
GF1710_011
Reply Annunciator
Ident Annunciator
NAVIGATION
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
17−10−8
TRAFFIC ALERT AND COLLISION AVOIDANCE SYSTEM (TCAS)
The TCAS is an airborne system that interrogates ATC transponders in nearby airplanes to identify
and display potential and predicted collision threats, within 700 feet of closest point of approach.
TCAS monitors a radius of up to 40 nautical miles about the airplane, computes range, bearing and
closure rate of up to 12 other transponder equipped airplanes relative to the “own” airplane. TCAS
and ATC transponder modes are set on the RMUs.
The system provides appropriate aural and visual cues to the flight crew when TCAS computer
analysis of an airplane signal predicts a penetration of TCAS protected airspace.
Target/Threat Advisories
The system provides four types of advisories:
· Traffic Advisory − Traffic advisories (TA) symbols appear on the MFD, when target(s) is
projected to converge with the TCAS equipped airplane in less than 45 seconds, with the
closest point of approach being inside a minimum vertical separation envelope. Traffic
advisories are generated for aircraft with operative mode S, mode C, or mode A
transponders. The relative bearing and range of the intruder are displayed.
· Resolution Advisory − Resolution advisories (RA) intruder symbols appear on the MFD,
when target (s) is predicted to penetrate the protected vertical envelope in less than
30 seconds. A green flyto
Pitch Target Zone rectangle is also displayed on the PFD ADI
which indicates the rate that must be achieved to maintain safe separation. Similarly, red
Pitch Avoidance Zones appear which indicate pitch rates that should be avoided. RA display
can only be issued if intruder airplane is equipped with mode S transponder.
· Proximity Traffic − Proximity Traffic (PT) symbols appear on the MFD when nonthreat
airplane(s), which have a flight path that approaches the collision area. The PT symbol is
displayed if the target does not qualify for a TA but is currently within 6.5 NM and 1200 feet
of the TCAS airplane.
· Other Traffic − Other Traffic (OT) symbols appear on the MFD to indicate targets
outside of the 1200 foot relative altitude region of PT, up to the TCAS range set by the pilot
and at a relative altitude difference of 2700 feet.
The TCAS system provides no indication of traffic conflicts if the intruder airplane is without an
operative transponder.
NAVIGATION
REV 41, Jul 08, 2004 Flight Crew Operating Manual
CSP 700−6
Volume 2
17−10−9
TRAFFIC ALERT AND COLLISION AVOIDANCE SYSTEM (TCAS) (CONT'D)
TCAS Symbology
THREAT LEVEL CAUSE SYMBOL
Resolution
Advisory (RA)
Traffic
Advisory (TA)
Proximate
Traffic (PT)
Other
Traffic (OT)
Intruding aircraft is 100 feet
above and descending at least
500 feet per minute.
Traffic is 1,200 feet below and
climbing at least 500 feet per
minute.
Intruding aircraft level with and
not climbing or descending.
Traffic is 2,700 feet above and
descending at least 500 feet per
minute.
+01
−12
+27
Up Arrow Indicates climbing traffic.
Down Arrow Indicates descending traffic.
Plus Sign (+) Relative altitude threat, airplane is
above own airplane.
Minus Sign (−) Relative altitude threat, airplane is
below own airplane.
DATA TAGS DEFINITION
GF1710_016
TCAS Modes
The following TCAS modes are selectable on the RMU:
· TA/RA Mode − Normal operation mode providing full TCAS coverage. TCAS tracks up to 12
airplanes in the surrounding airspace and generates TAs and RAs as required.
Airplanes 9002, 9005 to 9066 not incorporating SB 700−34−013, Traffic Alert and Collision
Avoidance System − Change 7 Software Upgrade:
· TA ONLY Mode − TCAS tracks all PT airplanes and generates TAs, no RAs. Automatically
selected when airplane is flying under 600 feet AGL.
Airplanes 9067 and subsequent and airplanes 9002, 9005 to 9066 incorporating
SB 700−34−013, Traffic Alert and Collision Avoidance System − Change 7 Software Upgrade:
· TA ONLY Mode − TCAS tracks all PT airplanes and generates TAs, no RAs. Automatically
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