Navigation

Question 1

Four types of navigation sensor, what and how many?

Answer 1

Pitot probes (3)
Static pressure (6)
AoA sensors (3)
TAT probes (2)

Question 2

What do Air Data Modules do? How many?

Answer 2

Convert pneumatic data from pitots and statics into numerical data for the ADIRUs

Eight

Question 3

What if IR pb flashes fault?

How often must the HDG be reset when in ATT mode?

Answer 3

FAULT lt flashing- ATT+HDG may be recoverable
Every 10 minutes via MCDU

Question 4

When ATT HDG switching to normal, which ADIRU supplies the DDRMI?

Answer 4

ADIRU1

Question 5

Table in FCOM shows crew the maximum tolerences in speed readings between ADIRUs. What is the maximum difference in speed on the ground between any unit?

Answer 5

6 kt / M0.008

Question 6

Does BUSS account for slat/flap position? What does the foot of the Red arrow equate to?

Answer 6

Yes
VLS

Question 7

Which busses supply the ISIS?

Which data sources feed it?

Answer 7

HOT BUS 1 + DC ESS BUS

• ADIRU 1
  
  • 3 as backup
• MMR 1 (ILS1)
• Standby pitot/probes

Question 8

When will an RA callout be repeated?

When does RETARD sound?

Answer 8

If time between callouts exceeds 11 sec (4 sec below 50 RA)

Repeats every 4 sec

RETARD at 20 RA
10 RA if autothrust connected and 1 AP in LAND mode

Question 9

Limitations

Within what lattitudes can you align?

Outside what lattitudes is flight prohibited due to invalid HDG/TRK readings?

Answer 9

73º N/S

Flight prohibited outside 73ºN, 60ºS