Flight Instruments

Question 1

What is PLI a function of?

Answer 1

• Airspeed in Mach
• Slat/Flap position,
• Angle of Attack
• Spoiler position
• Landing Gear position
• Icing conditions

Question 2

Color indications of Lateral Deviation Indicator

Answer 2

GREEN: onside navigation source is selected.
AMBER: cross-side navigation source is selected.
MAGENTA: FMS navigation source is selected.

Question 3

Components of Air Data System

Answer 3

4 x air data smart probes (Multi-function probs and ADCs)

Question 4

Primary air data sources during normal operation

Answer 4

– Left PFD - ADS 1
– Right PFD - ADS 2
– IESS – ADS 4

*ADS 3 as backup

Question 5

How long is IRS alignment on the ground

Answer 5

Up to 17 mins

Question 6

Main component of the Inertial Reference System (IRS)

Answer 6

- 2 x Inertial Reference Unit (IRUs)
    Interfaces with:
      - Modular Avionics Unit (MAU)
      - GPS
      - ADC

Question 7

Location of GPS modules

Answer 7

GPS 1 - MAU 1 (FWD Avionics Bay)

GPS 2 - MAU 3 (Center Electronics Bay)

Question 8

Minimum number of GPS satellite required from RAIM

Answer 8

5

*FMS doesn’t not accept GPS data without a valid RAIM figure

Question 9

When will FMS transition to cruise phase

Answer 9

reaching the initial cruise altitude set in the PERF INIT page

Question 10

Early Descent by selecting DES NOW

Answer 10

FD commands a 1000 FPM descent up to the point where the planned descent path or the next altitude constraint is intercepted

Question 11

Late Descent by selecting DES NOW

Answer 11

FD commands a descent angle 1.5° steeper than the planned descent angle to intercept the planned path.

Question 12

FMS Flight Phases

Answer 12

• Takeoff
• Departure
• Climb
• Cruise
• Descent
• Approach
• Go Around

Question 13

How many Air Data Systems

Answer 13

5

– ADS 1: TAT 1, ADSP 1/2 and ADA 1 (left side)
– ADS 2: TAT 2, ADSP 3/4 and ADA 2 (right side)
– ADS 3: TAT 1, ADSP 3/4 and ADA 3 (back up)
– ADS 4: ADSP 3/4 and IESS (stand-by instrument)
– ADS FCS: ADSP 1/2 (flight controls)