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Airbus 320 AP uses multiple variables to for each AP mode.
Mode
Variable
Description
Air Speed
AUTOPILOT AIRSPEED HOLD VAR
AP Value
/
AUTOPILOT AIRSPEED HOLD VAR:1
Selected/Display Value
/
AUTOPILOT AIRSPEED HOLD VAR:2
Managed Value
/
L:A320_FCU_SHOW_SELECTED_SPEED
If Selected speed is showed when managed mode is active
Heading
AUTOPILOT HEADING LOCK DIR
AP Value
/
AUTOPILOT HEADING LOCK DIR:1
Selected/Display value
/
L:A320_FCU_SHOW_SELECTED_HEADING
/
Internal timeout
Altitude
AUTOPILOT ALTITUDE LOCK VAR
AP value
/
AUTOPILOT ALTITUDE LOCK VAR:1
Selected value
/
AUTOPILOT ALTITUDE LOCK VAR:2
Managed value
/
AUTOPILOT ALTITUDE LOCK VAR:3
Display
Vertical Speed
AUTOPILOT VERTICAL HOLD VAR
/
AUTOPILOT VERTICAL HOLD VAR:1
Managed value (in CLB/DES mode)
/
AUTOPILOT VERTICAL HOLD VAR:2
Display value
/
Internal timeout
Increase/Decrease behaviors
Mode
Events
Managed/Selected
Description
Airspeed
AP_SPD_VAR_INC/AP_SPD_VAR_DEC
Managed
AP selected value changes. AP value momentarily changes to new Selected value then switches back to Managed value. Value does not show up automatically. Value does not start from current Managed value.
/
/
Selected
All 3 values change.
Heading
HEADING_BUG_SET
Managed
Selected/Display value changes. AP value momentarily changes to new Selected value then switches back to flight plan. Value does not show up automatically. Value does not start from current Managed value.
/
/
Selected
All 2 values change.
Altitude
AP_ALT_VAR_SET_ENGLISH
Managed
All 4 values change. CLB/DES is not triggered from ALT mode.
/
/
Selected
All 4 values change. CLB/DES is not triggered from ALT mode.
VS
AP_VS_VAR_SET_ENGLISH
CLB/DES/ALT*
All 4 values change
/
/
ALT
AP and Managed value stay at 0
Note: Speed and Heading does not automatically show up from --- if it is in Managed mode.
Push/Pull behaviors
Speed
Push button
SPEED_SLOT_INDEX_SET 2
Hide selected speed
Yes
Yes
Change to Managed mode
Yes
Yes
Pull button
SPEED_SLOT_INDEX_SET 1
Show selected speed
Yes
Yes
Copy current airspeed to selected speed
Yes
No
Change to Selected mode
Yes
Yes
Heading
Push button
HEADING_SLOT_INDEX_SET 2
Hide selected heading
Yes
Yes
Change to Managed mode
Yes
Yes
Pull button
HEADING_SLOT_INDEX_SET 1
Show selected heading
Yes
Yes
Copy current heading to selected heading
Yes
No
Change to Selected mode
Yes
Yes
Altitude
Push button
ALTITUDE_SLOT_INDEX_SET 2
Copy display altitude to selected and managed altitude
Yes
No
Trigger CLB/DES
Yes
No
Change to Managed mode
Yes
Yes
Pull button
ALTITUDE_SLOT_INDEX_SET 1
Copy display altitude to selected altitude
Yes
Yes
Trigger OP CLB/DES
Yes
No
Change to Selected mode
Yes
Yes
Vertical Speed
Push button
VS_SLOT_INDEX_SET 2 ?
Change to VS mode if CLB or DES
Yes
No
Set VS to 0
Yes
No
Pull button
VS_SLOT_INDEX_SET 1 ?
Copy Managed VS to Display VS
Yes
No
Change to VS mode if CLB or DES
Yes
No
The text was updated successfully, but these errors were encountered:
Airbus 320 AP uses multiple variables to for each AP mode.
Increase/Decrease behaviors
Push/Pull behaviors
Speed
SPEED_SLOT_INDEX_SET
2SPEED_SLOT_INDEX_SET
1Heading
HEADING_SLOT_INDEX_SET
2HEADING_SLOT_INDEX_SET
1Altitude
ALTITUDE_SLOT_INDEX_SET
2ALTITUDE_SLOT_INDEX_SET
1Vertical Speed
VS_SLOT_INDEX_SET
2 ?VS_SLOT_INDEX_SET
1 ?The text was updated successfully, but these errors were encountered: