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┃ Lii,~ A320 ┃ ┃SEQ 100 I ┃I REV 30 ┃
┃ A~7-~'M" A321 ┃FLIGHT GUIDANCE ┃ ┃ ┃
┃ FLIGHT CREW OPERATING MANUAL ┃ ┃ ┃ ┃
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R Align sub-mode
R Align is a sub-mode of LAND also known as "decrab" that lines up the aircraft's axis with
R the ILS course at approximatively 30 feet. It is not displayed to the crew.
ROLL OUT MODE
At touchdown, the ROLL OUT mode engages and guides the aircraft along the runway
centerline. The FMA displays "ROLL OUT" in green, and the PFD displays the yaw bar and
no FD bars.
SPEED CONTROL
During an ILS approach, autothrust controls the speed, and the speed target may be
selected or managed.
Autothrust memorizes the approach speed at 700 feet RA, so that it can continue to fly a
stable approach even if the FMGS fails.
TYPICAL ILS APPROACH
- ARM LOC/APPR MODE
- ENGAGE SECOND AP
AUTOLAND WARNING LIGHT
30 Ft^.'~~IN REVERSE
1u r~ TOUCHDOWN
ROLL OUT
The following situations, when occurring below 200 feet RA, with the aircraft in LAND
mode, trigger the flashing AUTOLAND red warning and a triple click aural warning :
- Both APs OFF below 200 feet RA ;
- Excessive deviation in LOC (1/4 dot above 15 feet RA) or GLIDE (1 dot above 100 feet
RA) In addition, LOC and GLIDE scales flash on the PFD.
- Loss of LOC signal above 15 feet, or loss of GLIDE signal above 100 feet.
The FD bars flash on the PFD. The LAND mode remains engaged.
- The difference between both radio altimeter indications is greater than 15 feet.
LANDING CAPABILITIES
Each FMGC computes its own automatic landing capability.
The FMA displays "CAT1", "CAT 2", "CAT 3 SINGLE" or "CAT 3 DUAL" messages as soon
as the APPR pushbutton is pushed in to arm ILS approach modes (Refer to 4.05.70).
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┃ ┃ ┃1.22.30 P 54 ┃
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┃I -~ A318 ┃l AFLIGHTIGUIDANCE ┃SEQ 200 1 ┃I REV 27 ┃
┃ .,,,.8, ,, ~e~ A319 ┃ ┃ ┃ ┃
┃ Lli,~ A320 ┃ ┃ ┃ ┃
┃ A~7-~'M" A321 ┃ ┃ ┃ ┃
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本文链接地址：
AIRBUS A320 Flight Crew Operating Manual2(64)
