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Amendment of Class E Airspace; Lewistown, MT

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Final rule.


This action modifies Class E airspace at Lewistown Municipal Airport, Lewistown, MT. Controlled airspace is necessary to accommodate aircraft using Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures at Lewistown Municipal Airport. This improves the safety and management of Instrument Flight Rules (IFR) operations at the airport.


Effective date, 0901 UTC, November 15, 2012. The Director of the Federal Register approves this incorporation by reference action under 1 CFR Part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments.


Eldon Taylor, Federal Aviation Administration, Operations Support Group, Western Service Center, 1601 Lind Avenue SW., Renton, WA 98057; telephone (425) 203-4537.



On June 27, 2012, the FAA published in the Federal Register a Notice of Proposed Rulemaking (NPRM) to modify controlled airspace at Lewistown, MT (77 FR 38226). Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. No comments were received.

Class E airspace designations are published in paragraph 6002 and 6005, respectively, of FAA Order 7400.9V dated August 9, 2011, and effective September 15, 2011, which is incorporated by reference in 14 CFR part 71.1. The Class E airspace designations listed in this document will be published subsequently in that Order.

The Rule

This action amends Title 14 Code of Federal Regulations (14 CFR) part 71 by modifying Class E surface airspace, and Class E airspace extending upward from 700 feet above the surface, at Lewistown Municipal Airport, Lewistown, MT, to accommodate IFR aircraft executing RNAV (GPS) standard instrument approach procedures at the airport. This action is necessary for the safety and management of IFR operations.

The FAA has determined this regulation only involves an established body of technical regulations for which frequent and routine amendments are necessary to keep them operationally current. Therefore, this regulation: (1) Is not a “significant regulatory action” under Executive Order 12866; (2) is not a “significant rule” under DOT Regulatory Policies and Procedures (44 FR 11034; February 26, 1979); and (3) does not warrant preparation of a regulatory evaluation as the anticipated impact is so minimal. Since this is a routine matter that will only affect air traffic procedures and air navigation, it is certified this rule, when promulgated, will not have a significant economic impact on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. The FAA's authority to issue rules regarding aviation safety is found in Title 49 of the U.S. Code. Subtitle 1, Section 106 discusses the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the agency's authority. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority as it modifies controlled airspace at Lewistown Municipal Airport, Lewistown, MT.

Environmental Review

The FAA has determined that this action qualifies for categorical exclusion under the National Environmental Policy Act in accordance with FAA Order 1050.1E, “Environmental Impacts: Policies and Procedures,” paragraph 311a. This airspace action is not expected to cause any potentially significant environmental impacts, and no extraordinary circumstances exist that warrant preparation of an environmental assessment.

List of Subjects in 14 CFR Part 71

Adoption of the Amendment

In consideration of the foregoing, the Federal Aviation Administration amends 14 CFR part 71 as follows:


1. The authority citation for

Authority: 49 U.S.C. 106(g), 40103, 40113, 40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959-1963 Comp., p. 389.


2. The incorporation by reference in

Paragraph 6002 Class E airspace designated as surface areas.

* * * * *

ANM MT E2 Lewistown, MT [Modified]

Lewistown Municipal Airport, MT

(Lat. 47°02′57″N., long. 109°28′00″W.)

Within a 6.8-mile radius of the Lewistown Municipal Airport. This Class E airspace area is effective during the specific dates and times established in advance by a Notice to Airmen. The effective date and time will thereafter be continuously published in the Airport/Facility Directory.

Paragraph 6005 Class E airspace areas extending upward from 700 feet or more above the surface of the earth.

* * * * *

ANM MT E5 Lewistown, MT [Modified]

Lewistown Municipal Airport, MT

(Lat. 47°02′57″N., long. 109°28′00″W.)

That airspace extending upward from 700 feet above the surface within 9.3-mile radius of the Lewistown Municipal Airport, and within 4.5 miles each side of the Lewistown Municipal Airport 269° bearing extending from the 9.3-mile radius to 14.5 miles west of the airport, and within 2.5 miles south and 4 miles north of the Lewistown Municipal Airport 258° bearing extending from the 9.3-mile radius to 20.5 miles west of the airport; that airspace extending upward from 1,200 feet above the surface bounded by a line beginning at lat. 47°21′00″N., long. 110°33′00″W.; to lat. 47°30′00″N., long. 110°00′00″W.; to lat. 47°16′00″N., long. 109°44′00″W.; to lat. 47°11′33″N., long. 108°46′00″W.; to lat. 46°43′40″N., long. 108°48′22″W.; to lat. 46°43′40″N., long. 109°32′14″W., to lat. 46°32′19″N., long. 109°32′14″W.; to lat. 46°32′19″N., long. 110°06′30″W.; thence to the point of origin.

Issued in Seattle, Washington, on August 17, 2012.

John Warner,

Manager, Operations Support Group, Western Service Center.

[FR Doc. 2012-21164 Filed 8-28-12; 8:45 am]