Aircraft Labels

DRAFT - Definitions subject to change

Aircraft labels are defined separately from the colours and symbols used by labels & tracks. The contents and layout of the label may be customised.

Every FIR can specify an unlimited number of label formats. Label formats are defined by the label directory name located in fir/labels/(format_name)

Each named format directory groups the following files:

• labelfields.xml
• (label_state).xml

A number of different aircraft states exist, all of which can have a distinct label format:

Airborne labels

• Default (default - track not affecting sector)
• Concerned (aircraft planned to enter sector)
• Assumed (aircraft assumed by sector)
• Released (aircraft released by sector)
• Uncorrelated (aircraft with XPDR code not linked to a flight plan)
• Filtered (label of track which is filtered by upper/lower filter)

The default label must be defined as a minimum. All further states are optional and only need to be defined if the label layout for the state differs from the unconcerned state. Note that the colours of a track/label state completely are independent.

Ground label

• Default (unknown route)
• Arrival (arriving aircraft)
• Departure (departing aircraft)

The default label must be defined as a minimum. Further states are optional and follow the logic of the airborne labels.

A huge variety of usable fields exist which can be customised to suit the desired visual presentation. Some fields also allow the selection of the unit used such as Meters/Feet or Knots/KmH

All fields may be shortened e.g. 23 instead of 230 or NIN instead of NINTU. A prefix may also be assigned e.g. G435.

Fields may also be hidden unless the track is selected.

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