Goto Section: 22.821 | 22.859 | Table of Contents

FCC 22.857
Revised as of
Goto Year:1996 | 1998
Sec. 22.857  Channel plan for commercial aviation air-ground systems.

    The 849-851 and 894-896 MHz frequency ranges are allocated for block 
assignment to nationwide air-ground systems providing radiotelephone 
service to passengers aboard commercial aircraft. These frequency ranges 
may also be used to provide service to persons in general aviation or 
other aircraft. Ground stations transmit on channels in the 849-851 MHz 
range. Airborne mobile stations transmit on

[[Page 181]]

channels in the 894-896 MHz range. Systems using these channels must 
conform to the channel plan described in this section.
    (a) Channel blocks. The spectrum allocated for commercial aviation 
air-ground systems is divided into ten channel blocks, numbered 1 
through 10. All ground stations in each geographical area must use the 
same channel block for communication with airborne mobile stations in 
flight, in accordance with Sec. 22.859.
    (1) Each channel block is subdivided into 6 control channels labeled 
P-1 through P-6, and 29 communications channels labeled C-1 through C-
29.
    (2) The authorized channel bandwidths are as follows:
    (i) Each control channel has a bandwidth of 3.2 kHz.
    (ii) Each communications channel has a bandwidth of 6 kHz.
    (b) The center frequencies (in MegaHertz) of the communications and 
control channels are listed in Tables G-1 and G-2 of this section.

                                                           Table G-1.--Ground Station Channels                              
                            
----------------------------------------------------------------------------------------------------------------------------
----------------------------
                                                                      Channel block                                         
                            
----------------------------------------------------------------------------------------------------------------------------
-----------------------------
                                                10         9          8          7          6          5          4         
 3          2          1    
----------------------------------------------------------------------------------------------------------------------------
----------------------------
C-1.......................................   849.0055   849.2055   849.4055   849.6055   849.8055   850.0055   850.2055   85
0.4055   850.6055   850.8055
C-2.......................................   849.0115   849.2115   849.4115   849.6115   849.8115   850.0115   850.2115   85
0.4115   850.6115   850.8115
C-3.......................................   849.0175   849.2175   849.4175   849.6175   849.8175   850.0175   850.2175   85
0.4175   850.6175   850.8175
C-4.......................................   849.0235   849.2235   849.4235   849.6235   849.8235   850.0235   850.2235   85
0.4235   850.6235   850.8235
C-5.......................................   849.0295   849.2295   849.4295   849.6295   849.8295   850.0295   850.2295   85
0.4295   850.6295   850.8295
C-6.......................................   849.0355   849.2355   849.4355   849.6355   849.8355   850.0355   850.2355   85
0.4355   850.6355   850.8355
C-7.......................................   849.0415   849.2415   849.4415   849.6415   849.8415   850.0415   850.2415   85
0.4415   850.6415   850.8415
C-8.......................................   849.0475   849.2475   849.4475   849.6475   849.8475   850.0475   850.2475   85
0.4475   850.6475   850.8475
C-9.......................................   849.0535   849.2535   849.4535   849.6535   849.8535   850.0535   850.2535   85
0.4535   850.6535   850.8535
C-10......................................   849.0595   849.2595   849.4595   849.6595   849.8595   850.0595   850.2595   85
0.4595   850.6595   850.8595
C-11......................................   849.0655   849.2655   849.4655   849.6655   849.8655   850.0655   850.2655   85
0.4655   850.6655   855.8655
C-12......................................   849.0715   849.2715   849.4715   849.6715   849.8715   850.0715   850.2715   85
0.4715   850.6715   850.8715
C-13......................................   849.0775   849.2775   849.4775   849.6775   849.8775   850.0775   850.2775   85
0.4775   850.6775   850.8775
C-14......................................   849.0835   849.2835   849.4835   849.6835   849.8835   850.0835   850.2835   85
0.4835   850.6835   850.8835
C-15......................................   849.0895   849.2895   849.4895   849.6895   849.8895   850.0895   850.2895   85
0.4895   850.6895   850.8895
C-16......................................   849.0955   849.2955   849.4955   849.6955   849.8955   850.0955   850.2955   85
0.4955   850.6955   850.8955
C-17......................................   849.1015   849.3015   849.5015   849.7015   849.9015   850.1015   850.3015   85
0.5015   850.7015   850.9015
C-18......................................   849.1075   849.3075   849.5075   849.7075   849.9075   850.1075   850.3075   85
0.5075   850.7075   850.9075
C-19......................................   849.1135   849.3135   849.5135   849.7135   849.9135   850.1135   850.3135   85
0.5135   850.7135   850.9135
C-20......................................   849.1195   849.3195   849.5195   849.7195   849.9195   850.1195   850.3195   85
0.5195   850.7195   850.9195
C-21......................................   849.1255   849.3255   849.5255   849.7255   849.9255   850.1255   850.3255   85
0.5255   850.7255   850.9255
C-22......................................   849.1315   849.3315   849.5315   849.7315   849.9315   850.1315   850.3315   85
0.5315   850.7315   850.9315
C-23......................................   849.1375   849.3375   849.5375   849.7375   849.9375   850.1375   850.3375   85
0.5375   850.7375   850.9375
C-24......................................   849.1435   849.3435   849.5435   849.7435   849.9435   850.1435   850.3435   85
0.5435   850.7435   850.9435
C-25......................................   849.1495   849.3495   849.5495   849.7495   849.9495   850.1495   850.3495   85
0.5495   850.7495   850.9495
C-26......................................   849.1555   849.3555   849.5555   849.7555   849.9555   850.1555   850.3555   85
0.5555   850.7555   850.9555
C-27......................................   849.1615   849.3615   849.5615   849.7615   849.9615   850.1615   850.3615   85
0.5615   850.7615   850.9615
C-28......................................   849.1675   849.3675   849.5675   849.7675   849.9675   850.1675   850.3675   85
0.5675   850.7675   850.9675
C-29......................................   849.1735   849.3735   849.5735   849.7735   849.9735   850.1735   850.3735   85
0.5735   850.7735   850.9735
P-6.......................................   849.1813   849.3813   849.5813   849.7813   849.9813   850.1813   850.3813   85
0.5813   850.7813   850.9813
P-5.......................................   849.1845   849.3845   849.5845   849.7845   849.9845   850.1845   850.3845   85
0.5845   850.7845   850.9845
P-4.......................................   849.1877   849.3877   849.5877   849.7877   849.9877   850.1877   850.3877   85
0.5877   850.7877   850.9877
P-3.......................................   849.1909   849.3909   849.5909   849.7909   849.9909   850.1909   850.3909   85
0.5909   850.7909   850.9909
P-2.......................................   849.1941   849.3941   849.5941   849.7941   849.9941   850.1941   850.3941   85
0.5941   850.7941   850.9941
P-1.......................................   849.1973   849.3973   849.5973   849.7973   849.9973   850.1973   850.3973   85
0.5973   850.7973   850.9973
----------------------------------------------------------------------------------------------------------------------------
----------------------------


                                                      Table G-2.--Airborne Mobile Station Channels                          
                            
----------------------------------------------------------------------------------------------------------------------------
----------------------------
                                                                      Channel block                                         
                            
----------------------------------------------------------------------------------------------------------------------------
-----------------------------
                                                10         9          8          7          6          5          4         
 3          2          1    
----------------------------------------------------------------------------------------------------------------------------
----------------------------
C-1.......................................   894.0055   894.2055   894.4055   894.6055   894.8055   895.0055   895.2055   89
5.4055   895.6055   895.8055
C-2.......................................   894.0115   894.2115   894.4115   894.6115   894.8115   895.0115   895.2115   89
5.4115   895.6115   895.8115
C-3.......................................   894.0175   894.2175   894.4175   894.6175   894.8175   895.0175   895.2175   89
5.4175   895.6175   895.8175
C-4.......................................   894.0235   894.2235   894.4235   894.6235   894.8235   895.0235   895.2235   89
5.4235   895.6235   895.8235
C-5.......................................   894.0295   894.2295   894.4295   894.6295   894.8295   895.0295   895.2295   89
5.4295   895.6295   895.8295
C-6.......................................   894.0355   894.2355   894.4355   894.6355   894.8355   895.0355   895.2355   89
5.4355   895.6355   895.8355
C-7.......................................   894.0415   894.2415   894.4415   894.6415   894.8415   895.0415   895.2415   89
5.4415   895.6415   895.8415
C-8.......................................   894.0475   894.2475   894.4475   894.6475   894.8475   895.0475   895.2475   89
5.4475   895.6475   895.8475
C-9.......................................   894.0535   894.2535   894.4535   894.6535   894.8535   895.0535   895.2535   89
5.4535   895.6535   895.8535

[[Page 182]]

                                                                                                                            
                            
C-10......................................   894.0595   894.2595   894.4595   894.6595   894.8595   895.0595   895.2595   89
5.4595   895.6595   895.8595
C-11......................................   894.0655   894.2655   894.4655   894.6655   894.8655   895.0655   895.2655   89
5.4655   895.6655   895.8655
C-12......................................   894.0715   894.2715   894.4715   894.6715   894.8715   895.0715   895.2715   89
5.4715   895.6715   895.8715
C-13......................................   894.0775   894.2775   894.4775   894.6775   894.8775   895.0775   895.2775   89
5.4775   895.6775   895.8775
C-14......................................   894.0835   894.2835   894.4835   894.6835   894.8835   895.0835   895.2835   89
5.4835   895.6835   895.8835
C-15......................................   894.0895   894.2895   894.4895   894.6895   894.8895   895.0895   895.2895   89
5.4895   895.6895   895.8895
C-16......................................   894.0955   894.2955   894.4955   894.6955   894.8955   895.0955   895.2955   89
5.4955   895.6955   895.8955
C-17......................................   894.1015   894.3015   894.5015   894.7015   894.9015   895.1015   895.3015   89
5.5015   895.7015   895.9015
C-18......................................   894.1075   894.3075   894.5075   894.7075   894.9075   895.1075   895.3075   89
5.5075   895.7075   895.9075
C-19......................................   894.1135   894.3135   894.5135   894.7135   894.9135   895.1135   895.3135   89
5.5135   895.7135   895.9135
C-20......................................   894.1195   894.3195   894.5195   894.7195   894.9195   895.1195   895.3195   89
5.5195   895.7195   895.9195
C-21......................................   894.1255   894.3255   894.5255   894.7255   894.9255   895.1255   895.3255   89
5.5255   895.7255   895.9255
C-22......................................   894.1315   894.3315   894.5315   894.7315   894.9315   895.1315   895.3315   89
5.5315   895.7315   895.9315
C-23......................................   894.1375   894.3375   894.5375   894.7375   894.9375   895.1375   895.3375   89
5.5375   895.7375   895.9375
C-24......................................   894.1435   894.3435   894.5435   894.7435   894.9435   895.1435   895.3435   89
5.5435   895.7435   895.9435
C-25......................................   894.1495   894.3495   894.5495   894.7495   894.9495   895.1495   895.3495   89
5.5495   895.7495   895.9495
C-26......................................   894.1555   894.3555   894.5555   894.7555   894.9555   895.1555   895.3555   89
5.5555   895.7555   895.9555
C-27......................................   894.1615   894.3615   894.5615   894.7615   894.9615   895.1615   895.3615   89
5.5615   895.7615   895.9615
C-28......................................   894.1675   894.3675   894.5675   894.7675   894.9675   895.1675   895.3675   89
5.5675   895.7675   895.9675
C-29......................................   894.1735   894.3735   894.5735   894.7735   894.9735   895.1735   895.3735   89
5.5735   895.7735   895.9735
P-6.......................................   894.1813   894.3813   894.5813   894.7813   894.9813   895.1813   895.3813   89
5.5813   895.7813   895.9813
P-5.......................................   894.1845   894.3845   894.5845   894.7845   894.9845   895.1845   895.3845   89
5.5845   895.7845   895.9845
P-4.......................................   894.1877   894.3877   894.5877   894.7877   894.9877   895.1877   895.3877   89
5.5877   895.7877   895.9877
P-3.......................................   894.1909   894.3909   894.5909   894.7909   894.9909   895.1909   895.3909   89
5.5909   895.7909   895.9909
P-2.......................................   894.1941   894.3941   894.5941   894.7941   894.9941   895.1941   895.3941   89
5.5941   895.7941   895.9941
P-1.......................................   894.1973   894.3973   894.5973   894.7973   894.9973   895.1973   895.3973   89
5.5973   895.7973   895.9973
----------------------------------------------------------------------------------------------------------------------------
----------------------------


Goto Section: 22.821 | 22.859

Goto Year: 1996 | 1998
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