REQUIRED EQUIPMENT MONITORED BY THE FG Flashcards
AP
LAND2:1 AP engaged LAND3 SINGLE:1 AP engaged
LAND3 DUAL:2 APs engaged
A/THR
LAND2:Not required LAND3 SINGLE:Active LAND3 DUAL:Active
PRIM
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:PRIM 1 and PRIM 2, or PRIM 1 and PRIM 3.
SEC
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:1
Flight control vertical accelerometer, used for the computation of pitch normal law(1)
1) The PRIMs monitor this equipment, and may trigger the AUTO FLT APPROACH CAPABILITY DOWNGRADED alert.
LAND2:3 LAND3 SINGLE:3 LAND3 DUAL:4
Flight control gyrometer, used by flight controls (1)
1) The PRIMs monitor this equipment, and may trigger the AUTO FLT APPROACH CAPABILITY DOWNGRADED alert.
LAND2:5 LAND3 SINGLE:5 LAND3 DUAL:6
Slat Control Unit
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:2
Flap Control Unit
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:2
Rudder trim
LAND2/ LAND3 SINGLE/ LAND3 DUAL:Available
Normal law
LAND2/ LAND3 SINGLE/ LAND3 DUAL:Available
Hydraulic circuit
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:2
AFS CP, or CAPT AFS CP backup, or F/O AFS CP
backup
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:1
PFD display(1) 1) The PRIMs monitor this equipment, and may trigger the AUTO FLT APPROACH CAPABILITY DOWNGRADED alert.
LAND2: 2 LAND3 SINGLE:2 LAND3 DUAL:2
FWS, including the audio function
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:2
FCDC
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:2
Normal or alternate braking
LAND2/ LAND3 SINGLE:Not required LAND3 DUAL:Available
Antiskid
LAND2/ LAND3 SINGLE:Not required LAND3 DUAL:Available
Nosewheel Steering (2)
(2) In LAND3 DUAL, the nosewheel steering must be able to receive AP guidance orders.
If the communication between the nosewheel steering and the FG is failed:
- LAND3 DUAL is lost
- The AUTO FLT ROLL OUT FAULT alert triggers.
LAND2/ LAND3 SINGLE:Not required LAND3 DUAL:Available
LGERS
LAND2:1 LAND3 SINGLE:1 LAND3 DUAL:1
Ground spoilers
LAND2/ LAND3 SINGLE/ LAND3 DUAL:Available
Radio Altimeter
LAND2:1 LAND3 SINGLE:2 LAND3 DUAL:RA A, and RA B, or RA B, and RA C.
ILS receiver(3)
3) In addition, the tuning of both ILS receivers must be consistent.
If the tuning of both ILS receivers is not consistent, the NAV LS TUNING DISAGREE alert triggers.
LAND2: 2 LAND3 SINGLE:2 LAND3 DUAL:2
ADR
LAND2:2 LAND3 SINGLE:2 LAND3 DUAL:3
IRS in NAV mode(1) (4)
(1) The PRIMs monitor this equipment, and may trigger the AUTO FLT APPROACH CAPABILITY DOWNGRADED alert.
(4) LAND3 DUAL will not be available, if the flight crew has set the ATT HDG selector out of NORM.
LAND2:2 LAND3 SINGLE:2 LAND3 DUAL:3
Angle of Attack (1)
LAND2:2 LAND3 SINGLE:2 LAND3 DUAL:3
Sideslip angle (1) (1) The PRIMs monitor this equipment, and may trigger the AUTO FLT APPROACH CAPABILITY DOWNGRADED alert.
LAND2:2 LAND3 SINGLE:2 LAND3 DUAL:3
Engine
5) If one engine fails, only three generators supply the AC busbars, and so LAND3 DUAL is lost. However, the
flight crew starts the APU, LAND3 DUAL is recovered.
LAND2:1 on the right side, and 1 on the left side
LAND3 SINGLE:3
LAND3 DUAL:4, or 3, with the APU running, and one APU generator connected to the electrical network.(5)
AC busbar (6) In accordance with the failure, and the associated equipment loss, capability downgrade may occur
LAND 2:(6) LAND 3 SINGLE:(6) LAND3 DUAL:6
Supply of AC busbars
(6) In accordance with the failure, and the associated equipment loss, capability downgrade may occur
LAND 2:(6) LAND 3 SINGLE:(6) LAND3 DUAL:4 DIFF GENS SUPPLY THE AC BUSBARS
Supply of DC busbars
LAND 2:(6) LAND 3 SINGLE:(6) LAND3 DUAL:Each DC busbar is supplied by its assigned TR
The FMAs display the precision approach capability:
When all of the following conditions are met:
LAND3 SINGLE, or LAND3 DUAL is memorized at 200 ft RA, and remains displayed as long as:
- At least one AP is engaged, and
- LAND, FLARE, or ROLL OUT is engaged.
An ILS approach has been selected on the FMS ARRIVAL page
The FMAs also display the approach capability if the flight crew manually selects the ILS on the FMS POSITION/NAVAIDS page.
The North reference is MAG
The LOC and G/S modes are armed, or engaged.
