Section 2. MTR Route Designation Criteria

6-2-1. LIMITATIONS

  1. Routes must be limited to the minimum number necessary to support operational requirements as determined by the appropriate military major/type command.
  2. To the extent practicable, routes must be designed to accommodate the maximum number of users and activities on the same route.

6-2-2. ROUTE IDENTIFICATION

  1. Routes must have a designator composed of the prefix “IR” or “VR” followed by a number from the table in subparagraph e, indicating the FAA Service Area in which the route's entry point is located. Alternate route segments established in accordance with paragraph 6-4-5, Alternate Entry, Exit, and End Points, or paragraph 6-7-5, Alternate Entry/Exit/End Points, must be identified by using the basic/principal route designator followed by a letter suffix; e.g., IR101A, IR101B, VR102A, VR102B.
  2. Route numbers must not be duplicated, regardless of whether they are IR or VR numbers. Assignment of route numbers must be by the Service Area military representatives.
  3. MTRs that include one or more segments above 1,500 feet (AGL) must be identified by three number characters; e.g., IR206, VR207.
  4. MTRs with no segment above 1,500 feet (AGL) must be identified by four number characters; e.g., IR1206, VR1207.
  5. Route number assignments must be made from the following allocation:

    TBL 6-2-1
    Route Number Assignments

    Region

    MTR Numbers, One or More Segments Above 1,500 Feet AGL

    MTR Numbers, All Routes at or Below 1,500 Feet AGL

    Southern

    001 thru 099

    1001 thru 1099

    Southwest

    100 thru 199

    1100 thru 1199

    Western-Pacific

    200 thru 299

    1200 thru 1299

    980 thru 999

    1980 thru 1999

    Northwest

    Mountain

    300 thru 499

    1300 thru 1499

    Central

    500 thru 599

    1500 thru 1599

    Great Lakes

    600 thru 699

    1600 thru 1699

    Eastern

    700 thru 799

    1700 thru 1799

    New England

    800 thru 899

    1800 thru 1899

    Alaska

    900 thru 979

    1900 thru 1979

  6. If a route is in development, the route's originator must contact the appropriate military representative located in the FAA Service Area in which the route commences to obtain a route number.
  7. MTRs are one-way routes. If the route is to be flown in the opposite direction, a separate route designator must be assigned.