Goto Section: 87.347 | 87.351 | Table of Contents
FCC 87.349
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 87.349 Frequencies.
(a) The frequency assigned to an aeronautical utility station at an airport
served by a control tower, RCO or FAA flight service station is the
frequency used by the control tower for ground traffic control or by the
flight service station for communications with vehicles. In addition to the
ground control frequency, an aeronautical utility station at an airport
served by a control tower or RCO may be assigned the tower or RCO frequency
if the assignment is specifically approved by the FAA as provided for in
§ 87.347(c). The frequencies assigned are normally from the band
121.600-121.925 MHz.
(b) The frequency assigned to the unicom is available to aeronautical
utility stations on a noninterference basis at airports which have a
part-time control tower, part-time RCO or part-time FAA flight service
station and a unicom.
(c) At airports which have a unicom but no control tower, RCO or FAA flight
service station, the frequency assigned to the unicom is available to
aeronautical utility stations on a noninterference basis. The frequencies
available for assignment to unicoms are described in subpart G of this part.
(d) At airports which have no control tower, RCO, flight service station or
unicom, the frequency 122.900 MHz is available for assignment to
aeronautical utility stations.
(e) The frequency 978.0 MHz is authorized for Universal Access Transceiver
data transmission.
(f) The Commission will assign frequency 1090 MHz for use by aeronautical
utility mobile stations for ground vehicle identification and collision
avoidance after coordination with the FAA, subject to the following
conditions:
(1) The applicant must notify the appropriate Regional Office of the FAA
prior to submission to the Commission of an application for a new station or
for modification of an existing station. Each application must include the
FAA Regional Office notified and date of notification.
(2) Eligibility is restricted to airport operators holding an FAA Airport
Operating Certificate, and other entities approved by the FAA on a
case-by-case basis to use frequency 1090 MHz for use by aeronautical utility
mobile stations for ground vehicle identification and collision avoidance;
(3) No more than two hundred 1090 MHz aeronautical utility mobile stations
will be authorized at one airport;
(4) Licenses are limited to only those locations that are within the
vicinity of an FAA ASDE-X multilateration system or ADS-B equipment, and/or
where the primary purpose for seeking transmit authorization is to provide
surface data to aircraft and air traffic control authorities.
(5) Message transmission rates are limited as indicated in the table below:
ADS-B Message Rate when moving Rate when stationary
Surface Position Message (Types 5, 6, 7, 8) Every 0.4 to 0.6 seconds Every
4.8 to 5.2 seconds.
Aircraft Operational Status (Type 31) Every 4.8 to 5.2 seconds Every 4.8 to
5.2 seconds.
Aircraft Identification and Type (Type 2) Every 4.8 to 5.2 seconds Every 9.8
to 10.2 seconds.
[ 55 FR 30464 , July 26, 1990, as amended at 55 FR 30908 , July 30, 1990; 71 FR 70680 , Dec. 6, 2006; 78 FR 61207 , Oct. 3, 2013]
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Goto Section: 87.347 | 87.351
Goto Year: 2014 |
2016
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