Sec. 87.263 Frequencies.
(a) Domestic VHF service. (1) The frequencies in the 128.825-132.000
MHz band and the frequencies 136.500 MHz, 136.525 MHz, 136.550 MHz,
136.575 MHz, 136.625 MHz, 136.600 MHz, 136.625 MHz, 136.650 MHz, 136.675
MHz, 136.700 MHz and 136.725 MHz are available to serve domestic routes.
The frequencies 136.900 MHz, 136.925 MHz, 136.950 MHz and 136.975 MHz
are available to serve domestic and international routes. The
frequencies 136.750 MHz, 136.775 MHz, 136.800 MHz, 136.825 MHz, 136.850
MHz and 136.875 MHz are also available to enroute stations located at
least 288 kilometers (180 miles) from the Gulf of Mexico shoreline
(outside the Gulf of Mexico Region). Frequency assignments are based on
25 kHz spacing. Use of these frequencies must be compatible with
existing operations and must be in accordance with pertinent
international treaties and agreements.
(2) A system or network of interconnected enroute stations may
employ offset carrier techniques on the frequencies listed in paragraph
(a)(1). The carrier frequencies of the individual transmitters must not
be offset by more than &177;8kHz.
(3) The frequencies 122.825 and 122.875 MHz are available for
assignment to enroute stations which provide local area service to
aircraft approaching or departing a particular airport. These
frequencies will be assigned without regard to the restrictions
contained in Sec. 87.261 (c) and (d). Only organizations
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operating aircraft with a maximum capacity of 56 passengers or 8,200 kg
(18,000 lbs) cargo will be authorized use of these enroute frequencies.
(4) In Alaska, the frequencies 131.500, 131.600, 131.800 and 131.900
MHz may be assigned to aeronautical enroute stations without regard to
the restrictions contained in Sec. 87.261 (c) and (d).
(5) The frequencies 136.750 MHz, 136.775 MHz, 136.800 MHz, 136.825
MHz, 136.850 MHz and 136.875 MHz are available in the Gulf of Mexico
Region to serve domestic routes over the Gulf of Mexico and adjacent
coastal areas. Assignment of these six frequencies is reserved until
January 1, 1994, for helicopter flight following systems. Applicants
must provide a showing of need for all frequencies requested. Assignment
of these six frequencies in the Gulf of Mexico Region is not subject to
the conditions contained in Sec. 87.261(c) and paragraph (a)(2) of this
section. Frequency assignments are based on 25 kHz spacing. Use of these
frequencies must be compatible with existing operations and must be in
accordance with pertinent international treaties and agreements. For the
purpose of this paragraph, the Gulf of Mexico Region is defined as an
area bounded on the east, north and west by a line 288 km (180 miles)
inland from the Gulf of Mexico shoreline. Inland stations using these
frequencies must be located within forty-eight kilometers (30 miles) of
the Gulf of Mexico shoreline.
(b) Domestic HF service. (1) Regular use of high frequencies for
aeronautical enroute or any aeronautical mobile (R) communications in
the domestic service within the continental United States (excluding
Alaska) will not be authorized.
(2) These frequencies (carrier) are available for assignment to
serve aircraft operating in support of offshore drilling operations in
open sea areas beyond the range of VHF propagation:
kHz
2878.0 4672.0
3019.0 5463.0
3434.0 5508.0
(3) Alaska: The following frequencies (carrier) are available for
assignment to serve domestic air routes in the Alaska area:
(i) Throughout Alaska: Shared with the FAA and assigned where an
applicant shows the need for a service not provided by the FAA.
kHz
2866.0 5631.0
(ii) Alaska Aleutian chain and feeders.
kHz
2911.0 8855.0
2956.0 10066.0
5496.0 11363.0
6580.0
(iii) Central and Southeast Alaska and feeders.
kHz
2875.0 6580.0
2911.0 6604.0
3470.0 8876.0
5484.0 11357.0
(iv) The following frequencies (carrier) are available to enroute
stations in Alaska without regard to the restrictions contained in
Sec. 87.261 (c) or (d). These frequencies may also be used for
communications between enroute stations concerning matters directly
affecting aircraft with which they are engaged. Enroute stations located
at an uncontrolled airport shall not transmit information concerning
runway, wind or weather conditions during the operating hours of a
unicom.
kHz
3449.0 5472.0
5167.5 \1\ 5490.0
\1\ The frequency 5167.5 kHz is available to any station for emergency
communications in Alaska. No airborne operations are permitted. Peak
envelope power of stations operating on this frequency must not exceed
150 watts. This frequency may also be used by Alaska private fixed
stations for calling purposes, but only for establishing
communications.
(c) International VHF service. Frequencies in the 128.825-132.000
and 136.000-137.000 MHz bands are available to enroute stations serving
international flight operations. Frequency assignments are based on 25
kHz channel spacing. Proposed operations must be compatible with
existing operations in the band.
(d) International HF service. High frequencies (carrier) available
to enroute stations serving international flight
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operations on the Major World Air Route Areas (MWARA's), as defined in
the international Radio Regulations and the ICAO Assignment Plan, are:
(1) Central East Pacific (CEP):
kHz
2869.0 8843.0
3413.0 10057.0
4657.0 11282.0
5547.0 13300.0
5574.0 17904.0
6673.0
(2) Central West Pacific (CWP):
kHz
2998.0 6562.0
3455.0 8903.0
4666.0 10081.0
5652.0 11384.0
5661.0 13300.0
6532.0 17904.0
(3) North Pacific (NP):
kHz
2932.0 10048.0
5628.0 11330.0
6655.0 13300.0
6661.0 17904.0
(4) South Pacific (SP):
kHz
3467.0 10084.0
5559.0 11327.0
5643.0 13300.0
8867.0 17904.0
(5) North Atlantic (NAT):
kHz
2872.0 8825.0
2899.0 8831.0
2962.0 8864.0
2971.0 8879.0
3016.0 8891.0
3476.0 8906.0
4675.0 11279.0
5598.0 11309.0
5616.0 11336.0
5649.0 13291.0
6622.0 13306.0
6628.0 17946.0
(6) Europe (EUR):
kHz
3479.0 10084.0
5661.0 13288.0
6598.0 17961.0
(7) South America (SAM):
kHz
2944.0 10024.0
3479.0 10096.0
4669.0 11360.0
5526.0 13297.0
6649.0 17907.0
8855.0
(8) South Atlantic (SAT):
kHz
2854.0 8861.0
2935.0 11291.0
3452.0 13315.0
5565.0 13357.0
6535.0 17955.0
(9) Southeast Asia (SEA):
kHz
3470.0 10066.0
3485.0 11396.0
5649.0 13309.0
5655.0 13318.0
6556.0 17907.0
8942.0 ...................................
(10) East Asia (EA):
kHz
3016.0 10042.0
3485.0 11396.0
3491.0 13297.0
5655.0 13303.0
5670.0 13309.0
6571.0 17907.0
8897.0
(11) Middle East (MID):
kHz
2944.0 6631.0
2992.0 8918.0
3467.0 8951.0
3473.0 10018.0
4669.0 11375.0
5658.0 13288.0
5667.0 13312.0
6625.0 17961.0
(12) Africa (AFI):
kHz
2851.0 6673.0
2878.0 8894.0
3419.0 8903.0
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3425.0 8894.0
3467.0 11300.0
4657.0 11330.0
5493.0 13273.0
5652.0 13288.0
5658.0 13294.0
6559.0 17961.0
6574.0
(13) Indian Ocean (INO):
kHz
3476.0 13306.0
5634.0 17961.0
8879.0
(14) North Central Asia (NCA):
kHz
3004.0 6592.0
3019.0 10096.0
4678.0 13303.0
5646.0 13315.0
5664.0 17958.0
(15) Caribbean (CAR):
kHz
2887.0 8846.0
3455.0 8918.0
5520.0 11387.0
5550.0 11396.0
6577.0 13297.0
6586.0 17907.0
(e) Long distance operational control. Long distance operational
control frequencies provide communications between aeronautical enroute
stations and aircraft stations anywhere in the world for control of the
regularity and efficiency of flight and safety of aircraft. World-wide
frequencies are not assigned by administrations for MWARA and Regional
and Domestic Air Route Area (RDARA).
kHz
3013.0 10075.0
3494.0 11342.0
5529.0 11348.0
5538.0 13330.0
6637.0 13348.0
6640.0 17925.0
8933.0 21964.0
10033.0
(f) 121.500 MHz: Emergency and distress only.
[ 53 FR 28940 , Aug. 1, 1988, as amended at 54 FR 11721 , Mar. 22, 1989; 55 FR 28628 , July 12, 1990; 56 FR 21084 , May 7, 1991; 58 FR 44954 , Aug. 25,
1993]