Class Airline

The airline's 3-letter callsign or private registration identifier.

Examples:

• BAW — Airline callsign for British Airways.
• D-ABCD — German private registration (starts with ‘D’ followed by four letters, e.g. ‘DLHNS’).
• N-123AB — US private registration (starts with ‘N’ followed by three letters and two numbers, e.g. ‘N426BD’).
• RAIDR42- — Military registration (exactly ‘RAIDR42’, no variations).
• DLH2404- — Airline callsign (Lufthansa, exactly ‘DLH2404’, no variations).

The preferred directions for arrivals and departures. This can be a set containing any combination of:

• Very rough cardinal directions,
• Or precise headings in degrees from true north (numbers).

Numeric headings allow precision within ±20°. For example, 270° implies arrivals from and departures towards the west. Ensure suitable entry points and SIDs (or Departures) are available in these directions.

A relative weighted frequency score indicating how often this airline appears. For example:

• 0 means never,
• 0.1 means rarely,
• 1 means occasionally,
• 10 means frequently.

Optional pronunciation guide for the callsign. If omitted for private registrations, a shortened phonetic pronunciation will be automatically generated by the system.

A set of aircraft ICAO type designators (e.g., ‘A21N’, ‘BCS1’, ‘B789’). Aircraft types are chosen with equal probability.