Sec. 87.323  Frequencies.

    (a) 121.500 MHz: Emergency and distress only.
    (b) The frequencies 121.950, 123.300 and 123.500 MHz are available 
for assignment to aviation support stations used for pilot training, 
coordination of lighter-than-air aircraft operations, or coordination of 
soaring or free ballooning activities. Applicants for 121.950 MHz must 
coordinate their proposal with the appropriate FAA Regional Spectrum 
Management Office. A coordination statement must accompany the 
application. Applicants for aviation support land stations may request 
frequency(ies) based upon their eligibility although the Commission 
reserves the right to specify the frequency of assignment. Aviation 
support mobile stations will be assigned 123.300 and 123.500 MHz. 
However, aviation support mobile stations must operate only on a 
noninterference basis to communications between aircraft and aviation 
support land stations.
    (c) The frequency 122.775 MHz and, secondary to aeronautical 
multicom stations, the frequency 122.850 MHz are available for 
assignment to aviation support stations. These frequencies may be used 
for communications between aviation service organizations and aircraft 
in the airport area. These frequencies must not be used for air traffic 
control purposes or to transmit information pertaining to runway, wind 
or weather conditions.
    (d) The frequency 3281.0 kHz is available for assignment to aviation 
support stations used for coordination of lighter-than-air aircraft 
operations.

             Subpart L--Aeronautical Utility Mobile Stations