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‐ When the flight crew presses the LOC pb , only the G/S mode disarms.
The V/S or FPA mode engages, if the G/S mode was engaged
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD COMMON MODES - APPROACH
A330/A340 FLEET DSC-22_30-80-30-10 P 3/8
FCOM 19 AUG 10
‐ The flight crew pulls the HDG/TRK knob
‐ The flight crew engages a go-around mode.
ENGAGEMENT CONDITIONS OF LOC AND G/S MODES
When ILS capture conditions are fulfilled:
‐ LOC* mode engages, and
‐ G/S* mode engages (No radio altimeter validity is required with this standard for G/S
engagement).
The FMA displays "LOC*" or "G/S*" or both in green.
Nevertheless, G/S* mode cannot engage if:
‐ LOC* mode is not engaged, or
‐ The aircraft is above the glide path and its trajectory does not cross the ILS G/S beam.
Once the aircraft is established on LOC axis:
‐ LOC mode engages
‐ G/S mode engages when the aircraft is established on G/S axis.
The FMA displays "LOC"and "G/S" in green.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD COMMON MODES - APPROACH
A330/A340 FLEET DSC-22_30-80-30-10 P 4/8
FCOM 19 AUG 10
The AP/FD guides the aircraft along the G/S down to 30 ft and along the LOC during the flare
and roll out.
Note: G/S* or G/S may engage at altitudes that are above the radio altimeter validity (8 000 ft
for TRT, 5 000 ft for Collins radio altimeters) but the landing capability displayed an
the FMA will reflect the lack of radio altimeter validity (CAT 1) until the RAs become
active. If the radio altimeters fail : LOC, G/S and AP/FDs will disengage and FDs will
reengage on basic modes.
DISENGAGEMENT CONDITIONS OF LOC AND G/S MODES
If the aircraft is above 400 ft, the ILS APPR mode disengages when the:
Flight crew presses the APPR pb , the system reverts ‐ to HDG V/S or TRK FPA basic modes
‐ Flight crew presses the LOC pb , the LOC mode remains engaged. The FMGES reverts to
V/S (FPA), if G/S was engaged
‐ Flight crew pulls the HDG/TRK knob, the FMGES reverts to HDG V/S or TRK FPA basic
modes
‐ Go-around engages
‐ LOC or G/S signal has been lost for 7 s or more above 200 ft RA. AP/FDs disengage and
FDs reengage in basic modes (HDG V/S or TRK FPA).
DISENGAGEMENT CONDITIONS OF G/S ONLY
‐ The flight crew pulls up the V/S or FPA knob. LOC mode remains engaged but G/S mode
disengages, and V/S or FPA engages.
‐ The flight crew pushes or pulls the ALT knob. LOC mode remains engaged and the mode
selected by the flight crew engages, as a function of the FCU selected altitude.
LOC CAPTURE ASSISTANCE FUNCTION
In NAV mode, and when within 20 nm of the destination runway, the aircraft is guided with a
track angle of 20 ° from the LOC axis. This helps the aircraft intercept and capture the LOC
beam. When the ILS frequency or the ILS ident entered on the RAD NAV page differs from the
ILS of the destination runway entered in the Flight Plan:
‐ The aircraft loses the LOC capture assistance function
‐ The "RWY/ILS MISMATCH" message is displayed on the scratchpad
‐ The flight crew should select HDG mode to perform the LOC capture.
Note: There is no glideslope capture assistance. The flight crew ensures that the flight path
of the aircraft intercepts the G/S beam for G/S* engagement.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD COMMON MODES - APPROACH
A330/A340 FLEET DSC-22_30-80-30-10 P 5/8
FCOM 19 AUG 10
LAND MODE
ENGAGEMENT CONDITIONS
LAND mode automatically engages when the LOC and G/S modes are engaged and the aircraft
is below 400 ft RA. The FMA displays "LAND", indicating that LOC and G/S are locked. No
action on the FCU disengages LAND mode. FLARE and ROLL OUT modes successively
engage.
DISENGAGEMENT CONDITIONS
LAND mode disengages:
‐ Upon engagement of the go-around mode
‐ If the flight crew presses the APPR pb, when the aircraft has been on ground for at least 10 s
with the autopilot disconnected.
Note: When LAND is not displayed on the FMA at/or slightly below 400 ft, the landing
capability degrades to CAT 1 and an aural triple click is generated. Autoland is not
allowed with CAT 1 displayed on the FMA.
FLARE MODE
Once the aircraft reaches approximately 55 ft RA (the precise value is a function of V/S):
‐ FLARE mode engages
‐ The FMA displays “FLARE” in green.
Around 45 ft RA, the AP/FD aligns the yaw axis with the runway centerline and the aircraft starts
　
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