17 Navigation System

Question 1

TCAS modes and altitude

Answer 1

• Norm: ± 2700 feet
• Above: + 9900 feet -2700 feet
• Below: -9900 feet +2700 feet

Question 2

4 TCAS symbols, what do they mean?
♢
🔷
🟡
🟥

Answer 2

• OT: Other Traffic
• PT: Proximity Traffic (inside ±1200 feet)
• TA: Traffic Alert (traffic is closest in 10-48 sec)(TA ONLY automaticly ON below 1000’ AGL)
• RA: Resolution Advisory (Corrective or Preventive action, e.i. “CLIMB CLIMB” and red and green markings on the VSI shows how fast to climb/descend).

Question 3

What does this TCAS symbol indicate?
🔷 -02 ⬇

Answer 3

• Proximity Traffic
• 200 feet below
• Descending > 500 fpm

Question 4

What does this TCAS symbol indicate?
🟥+07⬇

Answer 4

• Resolution Advisory
• 700 feet above
• Descending > 500 fpm

Question 5

GPS RAIM accuracy:
* Oceanic/remote
* En route
* Terminal
* Final Approach

Answer 5

• 4 NM
• 2 NM
• 1 NM “GPS TERM”
• 0.3 NM “GPS APPR”

(Det vises under NAV SOURCE på ens PFD)

Question 6

ATC selector 1 or 2, what is the difference?

Answer 6

Sends ATC data from ADC 1 or 2.
(Air Data Computer)

When flying in RVSM use same side as Autopilot is using, e.i. AP is flying on ADC 1, = use ATC selector 1.