§  87.471   Scope of service.

   Stations in the aeronautical radiodetermination service provide
   radionavigation and radiolocation services.

   (a) Transmission by radionavigation land stations must be limited to
   aeronautical navigation, including obstruction warning.

   (b) Radionavigation land test stations are used for the testing and
   calibration of aircraft navigational aids and associated equipment.
   When used as radionavigation land test stations (MTF) signal generators
   must be licensed as radionavigation land test stations (MTF).
   Transmission must be limited to cases when radiation is necessary and
   there is no alternative.

   (c) Transmissions by emergency locator transmitter (ELT) test stations
   must be limited to necessary testing of ELTs and to training operations
   related to the use of such transmitters.

   [ 53 FR 28940 , Aug. 1, 1988, as amended at  58 FR 67696 , Dec. 22, 1993]