What is PLI a function of?
- Airspeed in Mach
- Slat/Flap position,
- Angle of Attack
- Spoiler position
- Landing Gear position
- Icing conditions
Color indications of Lateral Deviation Indicator
GREEN: onside navigation source is selected.
AMBER: cross-side navigation source is selected.
MAGENTA: FMS navigation source is selected.
Components of Air Data System
4 x air data smart probes (Multi-function probs and ADCs)
Primary air data sources during normal operation
– Left PFD - ADS 1
– Right PFD - ADS 2
– IESS – ADS 4
*ADS 3 as backup
How long is IRS alignment on the ground
Up to 17 mins
Main component of the Inertial Reference System (IRS)
- 2 x Inertial Reference Unit (IRUs)
Interfaces with:
- Modular Avionics Unit (MAU)
- GPS
- ADCLocation of GPS modules
GPS 1 - MAU 1 (FWD Avionics Bay)
GPS 2 - MAU 3 (Center Electronics Bay)
Minimum number of GPS satellite required from RAIM
5
*FMS doesn’t not accept GPS data without a valid RAIM figure
When will FMS transition to cruise phase
reaching the initial cruise altitude set in the PERF INIT page
Early Descent by selecting DES NOW
FD commands a 1000 FPM descent up to the point where the planned descent path or the next altitude constraint is intercepted
Late Descent by selecting DES NOW
FD commands a descent angle 1.5° steeper than the planned descent angle to intercept the planned path.
FMS Flight Phases
- Takeoff
- Departure
- Climb
- Cruise
- Descent
- Approach
- Go Around
How many Air Data Systems
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)
