Autoflight Flashcards
The autoflight systems are
2 FMGEC, 3 MCDU, 1 FCU and 1 flight management source selection#
The FMGES is basically
The 2 FMGEC
How many channel the FCU has
2
The nav database is stored in
The FMGEC
What are the 2 types of guidance
Managed and Selected
The selected guidance has
Priority over the managed guidance
Pushing activate the
Managed mode
Pulling activate the
Selected mode
The FMGES tunes the NAVAID to
Determine the A/C present position
Each FMGEC has
Nav database, AMI, perf database and magnetic variation database
The navigation database are updated every
28 days
There is enough space to create and store
5 routes, 20 wpts, 10 runways and 20 navaids
The input from the FCU is sent
FMGEC at all times
Both FMGEC are synchronized but
1 can fail and normal ops are maintained
MCDU 3 is normally
A backup unit
In normal situation, AP 1 uses
FMGEC 1 and vice-versa
When both AP are used (DUAL mode), which FMGEC is used
1 is always the master
When no AP and FD engaged, autothrust is controlled by
FMGEC 1
If there is a major mismatch of datanase or operation program, the FMGEC will
Auto switch to independant mode, each FMGEC receives from it’s onside MCDU and controls onside EFIS and RMP
The thrust levers are
The main interface between the FMGEC and FADEC
The thrust levers will never
Move by themselves
The modes and conditions of the AP and A/THR are
Always displayed on the FMA
How many channel the FCU has
2
The A/THR is linked to
The onside FCU (AP selection)