Tcas

Question 1

Tcas 1

Answer 1

~intuders are classifed as: >6nm >1200ft
~proximate traffic : < 6nm and <1200
~traffic,traffic : based on closest point of approach cpa

Question 2

Traffic advisory

Answer 2

~a potential conflict
~dsiplayed as an amber,solid circle
~no escape manouvre is provided ,pilot need take action

20/48 sec away from the intruder

Answer 3

~warning of potential conflict traffic
~displayed an amber slodi circle
~aural warning ,traffic traffic

Question 4

Red

Answer 4

Issue escape only in vertical when necessary fro collision avoidance
Resolution advisory

Within 15/35 sec fro m intruder

Question 5

Reduction surveliance

Answer 5

~extended from 1sec up to 5 sec
~transmission power decreased t o5nm range

Hybrid surveliance
~low risk intruders monitored passively
Potential ra threats monitoring acively

Question 6

If two a/c has both S tranponder

Answer 6

Both will take countermisures

Question 7

Tcas 2

Answer 7

Uses mode S transponder to inerrogate transponder of other a/c and plot posiotn.range realtive closure and veritcal sepration

Question 8

Tcas operation

Answer 8

Provides a volume of protective airspace around the a/c
Time to CPA know as “tau”
Tau determines when the ra is triggered

15/35 sec.
Provide 300/600 feet separtion,this increases to 700 feet above fk240

Question 9

Inhibition of alert

Answer 9

During GPWS or windshear
~descent inhibited <1100ft
All aural alerts suppressed <1000ft RA

Question 10

CORRECTIVE ADVISORY

Answer 10

Escape manoeuvre needed

Question 11

Preventive advisory

Answer 11

No collisoion risk exists

Question 12

Equipment

Answer 12

~tcas computer
~mode s transponder
~directional antenna ,above and below fuselage
~panel

INPUT

~radio alt
~adc for presiisre alt
~gear and flap status