Goto Section: 87.261 | 87.265 | Table of Contents

FCC 87.263
Revised as of
Goto Year:1996 | 1998
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

[[Page 222]]

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

[[Page 223]]

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                             

[[Page 224]]

                                                                        
               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]


Goto Section: 87.261 | 87.265

Goto Year: 1996 | 1998
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