Supplement: Autoflight Flashcards
MCDU / FMGS:
What are the main components of the FMGS?
FCOM-DSC-22-10-10
º 2 FMGCs
º 2 MCDUs
º 1 FCU (two independent channels)
º 2 FACs
MCDU / FMGS:
What are the functions of the Flight Management Guidance Computers?
FCOM-DSC-22-10-10
º Flight Guidance
º Flight Management
MCDU / FMGS:
What are the 3 modes of FMGC operation?
FCOM-DSC-22-10-30
º Independent (MCDU scratchpad displays – INDEPENDENT OPERATION)
º Single (ND displays – SELECT OFFSIDE RNG/MODE)
º Dual (Normal)
MCDU / FMGS:
What are the 2 modes of flight guidance?
FCOM-DSC-22-30-10
º Managed Guidance
º Selected Guidance
MCDU / FMGS:
What is the Managed mode of flight guidance used for?
FCOM-DSC-22-30-10
Long-term lateral, vertical, and speed profiles as determined by the FMGS
MCDU / FMGS:
What is the Selected mode of flight guidance used for?
FCOM-DSC-22-30-10
Temporary lateral, vertical, and speed commands as selected with the FCU
MCDU / FMGS:
Does Selected or Managed Guidance have priority?
FCOM-DSC-22-10-10
Selected Guidance always has priority
MCDU / FMGS:
How do you determine the validity of the navigation database?
FCOM-DSC-22-20-20-50
On the Aircraft Status page via the MCDU
MCDU / FMGS:
What input does each FMGC use for position determination?
FCOM-DSC-22-20-20-10
A hybrid (“mix”) IRS/GPS position
MCDU / FMGS:
How does autopilot selection influence master FMGS logic?
FCOM-DSC-22-10-30
º If one autopilot is engaged, the respective FMGS is master
º If both autopilots are engaged, FMGS 1 will be the master
MCDU / FMGS:
If an amber SELECT OFFSIDE RNG/MODE message is displayed on the ND what action should the crew take?
FCOM-DSC-22-10-30
An FMGS has failed and both NDs must be set to the same mode and range (single mode)
MCDU / FMGS:
Can both autopilots be engaged during any phase of flight?
FCOM-DSC-22-30-30
No, only during an ILS approach
MCDU / FMGS:
What is the difference between the large and small fonts utilized in the MCDU?
FCOM-DSC-22-10-40-10
º Large – Pilot entries and modifiable data
º Small – Default/computed non-modifiable data
MCDU / FMGS:
Where do you enter the Zero Fuel Weight?
FCOM-DSC-22-20-50-10-25
INIT B page (not accessible after engine start)
MCDU / FMGS:
What do amber box prompts on the MCDU indicate?
FCOM-DSC-22-10-40-10
An entry is mandatory
MCDU / FMGS:
What occurs when managed NAV mode is engaged and the aircraft flies into a flight plan discontinuity?
FCOM-DSC-22-20-30-10-05
NAV mode will be lost and the HDG/TRK mode engage
MCDU / FMGS:
What is the function of the Flight Control Unit?
FCOM-DSC-22-10-10
º Permits short term interface between the pilot and FMGS
º Allows temporary modification of any flight parameter (HDG, SPD, ALT, V/S)
º Used to select operational modes of the autopilots, flight directors, and A/THR system
MCDU / FMGS:
What do dashes in the FCU display windows along with the adjacent white dot indicate?
FCOM-DSC-22-10-40-20
FMGS Managed Guidance is in use