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• the AFDS captures and tracks the localizer in the localizer (LOC) mode
and captures the glideslope in the glideslope (G/S) mode upon
interception
• localizer captures when the intercept track angle is within 120 degrees of
the localizer course
• glideslope captures when the intercept track angle is within 80 degrees of
the localizer course.
• arms, disarms, engages, or disengages roll mode (LOC, FAC, B/CRS)
pitch mode (G/S, G/P) for the approach selected in the FMC
• displays selected roll and pitch modes as armed on the PFD and HUD roll
and pitch flight mode annunciators prior to localizer / lateral path and
glideslope / glidepath capture
• displays selected roll and pitch modes in green (engaged) on the PFD and
HUD roll and pitch flight mode annunciators after each one is captured
• the AFDS captures and tracks the localizer / lateral path roll mode and
captures the glideslope / glidepath in the pitch mode upon interception
• localizer / lateral path captures when the intercept track angle is within
120 degrees of the localizer course
• glideslope glidepath captures when the intercept track angle is within 80
degrees of the localizer course.
Glideslope can capture before localizer capture.
The approach mode can be disarmed with both pitch and roll modes armed by
selecting APP, LOC, LNAV, or VNAV.
2 Localizer / Final Approach Course Light
3 Approach (APP) Switch
787 Flight Crew Operations Manual
Automatic Flight -
Controls and Indicators
4.10.16 Boeing Proprietary
The approach mode disengages:
• with roll mode engaged and pitch mode armed, by selecting heading
select (HDG/TRK SEL) or heading hold (HDG/TRK HOLD)
• with pitch mode engaged and roll mode armed, by selecting any other
pitch mode except VNAV
• independent of mode status, by engaging TO/GA mode, or by
disengaging the autopilot and turning both flight director switches off
• after roll and/or pitch modes are captured, by pushing the approach switch
a second time above 1,500 feet radio altitude (AFDS reverts to default roll
and pitch modes).
Illuminated (white) – the approach modes are armed or engaged.
PFD and HUD Flight Mode Annunciations (FMAs)
Note: When first engaged/activated, AFDS/autothrottle mode changes are
emphasized for 10 seconds by a green box drawn around the mode. A
change to the AFDS mode NO AUTOLAND is also emphasized by box
(amber on the PFD and green on the HUD).
Note: A horizontal line is drawn through the appropriate ENGAGED pitch or roll
mode when a flight mode fault is detected (amber on the PFD and green on
the HUD).
Displayed (green) –
4 Approach Light
1 Autothrottle Modes (Active)
20 20
10 10
-200
HOLD LNAV VNAV
LOC G/S
A/P
HUD
1 2 4
HOLD LNAV VNAV
LOC G/S
A/P
1 2 4
3 6 5 3 6 5
PFD PRELIMINARY
787 Flight Crew Operations Manual
Automatic Flight -
Controls and Indicators
Boeing Proprietary 4.10.17
Displayed (green) –
Displayed (green on HUD, white on PFD) –
Displayed (green) –

　
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本文鏈接地址：787機組操作手冊Flight Crew Operations Manual 1(141)