Index   59 -- Page 60 -- 61

7110.65R
AIM
AIM      CHG 2                                                                                                                            3/15/07
                                                                                                                                          5/26/16
                                                                                                                                         12/10/15



    2. Within 25 NM, the bottom of the T service                                      1. NDBs are classified according to their
volume is defined by the curve in FIG 1-1-4. Within                              intended use.
40 NM, the bottoms of the L and H service volumes
are defined by the curve in FIG 1-1-5. (See                                          2. The ranges of NDB service volumes are
TBL 1-1-1.)                                                                      shown in TBL 1-1-2. The distances (radius) are the
  e. Nondirectional Radio Beacon (NDB)                                           same at all altitudes.


                                                                         TBL 1-1-1
                                                   VOR/DME/TACAN Standard Service Volumes

 SSV Class Designator                                                      Altitude and Range Boundaries
T (Terminal) . . . . . . . .            From 1,000 feet above ground level (AGL) up to and including 12,000 feet AGL at radial distances out
                                        to 25 NM.
L (Low Altitude) . . . .                From 1,000 feet AGL up to and including 18,000 feet AGL at radial distances out to 40 NM.
H (High Altitude) . . . .               From 1,000 feet AGL up to and including 14,500 feet AGL at radial distances out to 40 NM. From
                                        14,500 AGL up to and including 60,000 feet at radial distances out to 100 NM. From 18,000 feet AGL
                                        up to and including 45,000 feet AGL at radial distances out to 130 NM.




                                                                         TBL 1-1-2
                                                                  NDB Service Volumes

                                               Class                                             Distance (Radius)
                                        Compass Locator                                              15 NM
                                                MH                                                   25 NM
                                                 H                                                  50 NM*
                                                HH                                                   75 NM
                        *Service ranges of individual facilities may be less than 50 nautical miles (NM). Restrictions to service
                        volumes are first published as a Notice to Airmen and then with the alphabetical listing of the NAVAID in
                        the Chart Supplement U.S.




                                                                         FIG 1-1-4
                                                           Service Volume Lower Edge Terminal


                            1000
         ALTITUDE IN FEET




                             500




                               0
                                   0                   5                10                  15                 20                   25

                                                             DISTANCE TO THE STATION IN NM




1-1-6                                                                                                                        Navigation Aids