Sec.  87.319   Scope of service.

   Aviation support stations are used for the following types of operations:

   (a) Pilot training;

   (b) Coordination of soaring activities between gliders, tow aircraft and
   land stations;

   (c) Coordination of activities between free balloons or lighter-than-air
   aircraft and ground stations;

   (d) Coordination between aircraft and aviation service organizations located
   on an airport concerning the safe and efficient portal-to-portal transit of
   the aircraft, such as the types of fuel and ground services available; and

   (e) Promotion of safety of life and property.