TCAS

Question 1

1-what principle does TCAS operate
2-What frequencies does it operate on

Answer 1

1-SSR
2-1030MHz to 1090MHz - UHF

Question 2

With regard to TCAS, what is depicted by:
1-unfilled diamond
2-filled diamond
3-filled yellow circle
4-filled red square

Answer 2

1-other non-threat traffic
2-proximate traffic, 6nm - 1200ft
3-intruders causing TAs
4-intruders causing RAs

Question 3

What distance does TCAS display in the following
1-Above
2-N(normal)
3-Below

Answer 3

1-2700ft below to 7000ft above a/c
2-2700ft below to 2700ft above
3-7000ft below to 2700ft above

Question 4

What happens during the following modes on TCAS
1-STBY
2-XPDR
3-TA
4-TA/RA
5-TFC

Answer 4

1-TCAS and Transponders in standby
2-TCAS in standby, Transponder is on, only responding to selective interrogation mode of mode S
3-Transponer on, TA function of TCAS is on
4-transponder on, TA and RA functions active
5-TCAS/ATC system on, all Transponder equipped a/c within 30nm displayed