Navigation

Question 1

How many sensors are part of the ADIRS?

Answer 1

‐ Four types of sensors: 
• Pitot probes (3) 
• Static pressure probes (STAT) (6) 
• Angle of attack sensors (AOA) (3) 
• Total air temperature probes (TAT) (2)

Question 2

Meaning of amber IR FAULT light

Answer 2

Steady: the respective IR is lost
Flashing: the attitude and heading information may be recovered in ATT mode.

Question 3

Full Scale Deflection on ND

Answer 3

VOR: Full-scale deflection is 10°/ 1 dot = 2° of dev.
ILS approach: Full-scale deflection is 2½°/ 1 dot = ½°of dev.
RNAV (5 dot CDI): FSD = 5NM displacement from selected course
Glide Slope scale: FSD = about 0.5-0.7° of deviation.

Question 4

Databases included in the FMC

Answer 4

• navigation (active and inactive)
• performance
• airline modifiable information
• magnetic variation
• Crew stored information

Question 5

Components of an ILS

Answer 5

• localizer
• glide path
• marker beacons
• approach lights

Question 6

Benefits of RNAV

Answer 6

• allows aircraft to fly more direct routes
• no longer need to fly over ground based nav
• allows for reduced vertical and horizontal separation