The Standard Instrument Departures (SIDs) are listed by which criterion?

The correct answer is that Standard Instrument Departures (SIDs) are listed by the criterion of "City then Airport." This means that when looking up SIDs in a chart or publication, they are organized based on the city associated with the airport rather than the airport itself.

This organization helps pilots and air traffic controllers quickly locate the departure procedures relevant to specific locations, especially in areas where multiple airports may be near one another. By categorizing SIDs in this way, it streamlines the process of finding the necessary departure routing and ensures that users can efficiently navigate among the myriad SIDs available for various airports within a city area.

In contrast, other criteria like "Airport then City" or "Route then Airport" would not provide the same level of clarity, as they could mix up procedures and possibly confuse users who are looking for a specific city’s procedures. The choice of "Runway then Destination" would also not apply to the organization of SIDs, as SIDs are not primarily designated by runway but are instead generalized routes that apply to all departures from an airport.