Sec.  95.645   Control accessibility.

   (a) No control, switch or other type of adjustment which, when manipulated,
   can result in a violation of the rules shall be accessible from the
   transmitter operating panel or from exterior of the transmitter enclosure.

   (b) An R/C transmitter which incorporates plug-in frequency determining
   modules which are changed by the user must be certificated with the modules.
   Each module must contain all of the frequency determining circuitry
   including the oscillator. Plug-in crystals are not considered modules and
   must not be accessible to the user.

   [ 53 FR 36789 , Sept. 22, 1988. Redesignated at  61 FR 28769 , June 6, 1996, and
   further redesignated at  61 FR 46567 , Sept. 4, 1996;  63 FR 36610 , July 7,
   1998]