User manual

XCSoar User Manual
This means that the aircraft is inside the Class C airspace ‘Bern
CTRgld’, with base of terrain surface and ceiling at 1350m.
At any time, the airspace warning dialog can be opened by select-
ing the menu:
INFO . Nearest Airspace
If well outside all airspace, this menu item just displays a simple
status message indicating details on the nearest airspace.
7.5 Airspace warning acknowlegement
When the warning dialog is visible and an airspace warning is ac-
tive, the dialog can be closed by pressing ESC. This has the effect
of closing the warning without actually acknowledging the warn-
ing.
When one or more warnings are visible in the airspace warning
dialog, a warning can be acknowledged by pressing one of the
buttons along the bottom of the dialog. When the list contains
more than one airspace warning, the rotary button on Altair (or
cursor on PDA) can be used to select one for acknowledgement.
The meanings of the acknowledgement buttons are as follows:
ACK Warn : Acknowledge the current warning level. A new warning will
appear only if the warning level increases. (Key F5 on Al-
tair)
ACK Space : Acknowledge all current and future warning levels from this
particular airspace region while the aircraft is within 2.5km
horizontal separation and 500m vertical separation. (Key F6
on Altair)
ACK Day : Acknowledge all current and future warning levels from this
particular airspace region for the rest of the flight (specifi-
cally, until Altair/XCSoar is restarted). (Key F7 on Altair)
Enable : Cancels an acknowledgement of the airspace, to reactivate
all warnings from this space. (Key F8 on Altair)
Close : Closes the airspace warning dialog, without acknowledg-
ing airspace. The dialog will re-open automatically if the
airspace warning level increases.
The general guidelines for using the dialog are:
• Don’t acknowledge a warning if you intend to or must avoid
the airspace
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